Autism

Autism Spectrum Disorder Treatment in Los Angeles

Autism Spectrum Disorder Treatment in Los Angeles

What Dr. Willison Treats

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Every person with autism spectrum disorder is different. The strengths, challenges, and support needs that one individual experiences can look completely unlike those of another, even within the same family. That is why autism care requires more than a checklist. It requires a clinician who takes the time to understand the whole person.

Dr. L. David Willison IV, MD, PhD, is a Board-certified Adult and Child/Adolescent psychiatrist in Los Angeles who provides comprehensive psychiatric evaluation and ongoing care for children, adolescents, and adults on the autism spectrum. From initial diagnosis through long-term support, Dr. Willison partners with patients and their families at every stage. Call today to schedule a consultation.

Understanding Autism Spectrum Disorder

Autism spectrum disorder, commonly referred to as ASD, is a neurodevelopmental condition that affects social communication, behavior, and sensory processing. The word spectrum reflects the wide range of ways autism presents across individuals. Some people with autism are highly verbal and academically accomplished, while others have significant language delays and require substantial daily support. Most fall somewhere in between.

Autism is not a disease to be cured. It is a different way of experiencing and interacting with the world. That said, many autistic individuals face real challenges, particularly in environments designed for neurotypical people, and they deserve access to care that helps them navigate those challenges more effectively.

The causes of autism are not fully understood, but research consistently points to a combination of genetic and environmental factors that affect early brain development. Autism is not caused by parenting style, vaccines, or childhood experiences.

Core Features of Autism Spectrum Disorder

  • Differences in social communication, such as difficulty reading social cues, maintaining conversations, or understanding nonverbal language like tone of voice and facial expressions
  • Restricted or repetitive behaviors and interests, including strong attachment to routines, repetitive movements, or intense focus on specific topics
  • Sensory sensitivities, such as heightened or reduced responses to sound, light, touch, taste, or smell
  • Challenges with flexible thinking or adapting to unexpected changes
  • Uneven skill profiles, meaning areas of exceptional ability alongside significant areas of difficulty

It is also important to recognize the strengths that many autistic individuals bring, including strong attention to detail, deep expertise in areas of interest, reliable pattern recognition, and a tendency toward directness and honesty.

Diagnosis Across the Lifespan

Autism can be identified at different points in life depending on a person’s presentation, environment, and access to care. A diagnosis at any age opens the door to better understanding, appropriate support, and effective treatment.

Early Childhood (Ages 2 to 5)

The earliest signs of autism often become apparent in the first two to three years of life. Parents may notice that their child has limited eye contact, does not respond to their name, shows little interest in other children, develops language later than expected, or engages in repetitive behaviors. An early diagnosis allows for earlier intervention, which research consistently shows leads to better long-term outcomes.

School-Age Children (Ages 6 to 12)

Some children are not identified until they reach school age, when the social and academic demands of the classroom make their differences more apparent. Social difficulties, sensory sensitivities, and behavioral challenges that were manageable at home may become more pronounced in a structured group setting. A school-age diagnosis can unlock important educational accommodations and support services.

Adolescents

The teenage years bring new social complexity, and many adolescents with autism find this period particularly challenging. Social hierarchies, romantic relationships, and the pressure to fit in can be deeply difficult to navigate. Some higher-functioning teens are identified for the first time during adolescence, often after years of struggling socially without knowing why. A diagnosis at this stage can bring significant relief and open access to targeted support.

Adults

A growing number of adults are receiving autism diagnoses later in life, sometimes in their thirties, forties, or beyond. Many spent decades masking their differences, working hard to appear neurotypical at great personal cost. An adult diagnosis often brings a profound sense of clarity, explaining a lifetime of experiences that previously felt confusing. Dr. Willison conducts thorough adult autism evaluations and approaches late-identified patients with care, respect, and an understanding of what it means to receive this kind of news as an adult.

Dr. Willison's Diagnostic Approach

Diagnosing autism requires a comprehensive clinical evaluation. Dr. Willison gathers detailed developmental and behavioral history, conducts a thorough psychiatric interview, and uses validated assessment tools. For children, input from parents and school staff is an essential part of the process. For adults, he also explores how current symptoms connect to experiences across the person’s entire life. The goal is always an accurate, complete picture that leads to meaningful support.

Co-Occurring Conditions

Autism rarely occurs in isolation. The majority of autistic individuals have at least one co-occurring psychiatric or medical condition, and many have several. Identifying and treating these conditions is one of the most important things a psychiatrist can do to improve quality of life for autistic patients.

Anxiety

Anxiety is among the most common co-occurring conditions in autism, affecting an estimated 40 to 50 percent of autistic individuals. The unpredictability of social situations, difficulty reading others’ intentions, and sensitivity to sensory input all create conditions where anxiety can thrive. Anxiety in autism can present as extreme rigidity around routines, school refusal, meltdowns, or physical symptoms such as stomachaches and headaches. Treatment may include therapy, medication, or both.

ADHD

ADHD and autism share overlapping features, and research shows that a significant proportion of autistic individuals also meet criteria for ADHD. The combination can intensify challenges with attention, impulse control, emotional regulation, and executive functioning. Identifying both conditions allows for a treatment plan that addresses the full picture rather than leaving one condition unmanaged.

Depression

Rates of depression are substantially higher in autistic individuals compared to the general population. Social isolation, repeated experiences of rejection or misunderstanding, and the exhaustion of masking can all contribute to depressive episodes. Depression in autism sometimes presents differently than in neurotypical individuals, which can make it harder to recognize. Dr. Willison has experience identifying and treating depression in the context of autism.

Sleep Disorders

Sleep problems are extremely common in autism across all ages. Difficulty falling asleep, frequent night waking, and irregular sleep schedules affect a large proportion of autistic children and adults. Poor sleep worsens nearly every other aspect of functioning, including mood, attention, and behavior. Addressing sleep is often one of the most impactful interventions in autism care.

OCD and Repetitive Behaviors

Distinguishing between the repetitive behaviors that are a core feature of autism and those driven by OCD can be clinically challenging but is important because the treatments differ. Dr. Willison carefully evaluates the nature and function of repetitive behaviors to guide appropriate care.

Medication Management for Co-Occurring Conditions

There is no medication that treats autism itself. However, medications can be highly effective for the co-occurring conditions that often cause significant distress and functional impairment in autistic individuals. Dr. Willison approaches medication carefully and thoughtfully, starting at low doses, monitoring closely, and adjusting based on the individual’s response.

Medications for Anxiety

SSRIs such as sertraline and fluoxetine are commonly used to treat anxiety in autistic patients. They can reduce the intensity of anxiety, improve flexibility around routines, and in some cases reduce repetitive behaviors driven by anxiety. Buspirone is another option with a favorable tolerability profile.

Medications for ADHD

Stimulant medications such as methylphenidate and amphetamine-based formulations can be effective for ADHD symptoms in autism, though autistic individuals may be more sensitive to side effects and may require closer monitoring and lower starting doses. Non-stimulant options such as guanfacine and atomoxetine are also commonly used and may be better tolerated by some patients.

Medications for Irritability and Aggression

When significant irritability, self-injurious behavior, or aggression is present, aripiprazole (Abilify) and risperidone (Risperdal) are FDA-approved for the treatment of these symptoms in autistic children and adolescents. Dr. Willison uses these medications judiciously, weighing benefits against potential side effects, and always as part of a broader care plan.

Medications for Sleep

Melatonin is commonly used as a first-line approach for sleep onset difficulties in autism and has a strong safety record. When sleep disturbances are more complex, other options may be considered. Addressing underlying anxiety or ADHD often improves sleep as well.

Dr. Willison always discusses medication options in detail with patients and families before prescribing. The goal is to improve quality of life and functioning, never to eliminate behaviors that are a natural part of who someone is.

Family Support and Education

Autism affects the entire family, not just the individual with the diagnosis. Parents, siblings, and other caregivers often carry a significant emotional, logistical, and financial load, and their need for support is just as real as that of the patient.

Dr. Willison believes that families are essential partners in autism care. He takes time to explain the diagnosis in plain language, answer questions honestly, and help families understand what their loved one is experiencing and why. This foundation of understanding changes everything, from how families communicate to how they respond to difficult moments.

What Family Support Looks Like

  • Education about autism, including how it presents in their specific family member and what drives challenging behaviors
  • Guidance on communication strategies that reduce frustration and build connection
  • Support in navigating school systems, IEPs, and community resources
  • Help understanding how co-occurring conditions like anxiety or ADHD are affecting their loved one
  • Referrals to parent support groups, advocacy organizations, and additional therapeutic services as needed
  • A space where parents and caregivers can ask questions, voice concerns, and feel heard

Caring for an autistic family member is a marathon, not a sprint. Dr. Willison is committed to supporting the whole family over the long term.

Social Skills Training

Social communication is one of the most consistently challenging areas for autistic individuals, and it is an area where structured support can make a meaningful difference. Social skills training refers to a range of structured approaches designed to help autistic children, teens, and adults understand and navigate social interactions more effectively.

It is important to approach social skills support from a strengths-based perspective. The goal is not to make autistic individuals appear neurotypical or to suppress their authentic way of engaging with the world. Rather, it is to give them more tools and options so that they can connect with others in ways that feel meaningful to them.

What Social Skills Training May Address

  • Understanding conversational turn-taking, topic shifts, and appropriate timing
  • Reading facial expressions, body language, and tone of voice
  • Managing social anxiety that makes social situations feel overwhelming
  • Building and maintaining friendships at an age-appropriate level
  • Navigating group dynamics in school, work, or community settings
  • Practicing social scenarios in a safe, structured environment before applying them in real life

Social skills groups, individual therapy with a focus on social cognition, and programs such as PEERS (Program for the Education and Enrichment of Relational Skills) are among the evidence-based approaches Dr. Willison may recommend or coordinate as part of a broader care plan.

Transition Planning: Adolescence to Adulthood

One of the most underserved periods in autism care is the transition from adolescence to adulthood. Services and support that were available throughout childhood often end abruptly at age 18 or 22, leaving young adults and their families to navigate a very different and often more fragmented landscape on their own.

Dr. Willison takes transition planning seriously. For adolescent patients approaching adulthood, he begins conversations about the future well in advance, working with the patient and family to build a realistic plan that addresses the key domains of adult life.

Areas Addressed in Transition Planning

  • Higher education: identifying appropriate colleges or vocational programs, securing disability accommodations, and preparing for the increased independence that college life requires
  • Employment: exploring career interests that align with strengths, understanding workplace rights and available accommodations, and building the skills to communicate effectively in a work environment
  • Independent living: assessing readiness for living away from home, building daily living skills, and identifying community-based support services
  • Healthcare: transitioning from pediatric to adult care providers, building self-advocacy skills so that the young adult can communicate their own needs in medical settings
  • Financial planning: connecting families with resources related to benefits, trusts, and financial planning tools available for adults with disabilities
  • Social and community life: identifying opportunities to build social connections, pursue interests, and participate in the community in meaningful ways

Transition is not a single event. It is an ongoing process that Dr. Willison supports across multiple appointments and in close partnership with the young person and their family.

What Dr. Willison Treats

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DID YOU KNOW?

Frequently Asked Questions About Autism

Autism spectrum disorder is a neurodevelopmental condition characterized by differences in social communication, restricted or repetitive behaviors and interests, and often heightened or reduced sensitivity to sensory input. It is called a spectrum because the presentation varies widely from person to person. Autism is not a disease or a defect. It is a different way of being in the world, and while it brings real challenges, it also comes with genuine strengths.

Early signs in young children may include limited eye contact, not responding to their name, delayed speech or language development, little interest in playing with other children, and repetitive movements such as hand-flapping or rocking. In older children and adults, signs may include difficulty with back-and-forth conversation, taking language very literally, strong preferences for routines, intense interest in specific topics, difficulty in group social settings, and sensory sensitivities. Signs look different at different ages and across genders.

Dr. Willison begins with a comprehensive psychiatric evaluation that includes a detailed history, clinical interview, and validated assessment tools. For children, he gathers information from parents and school staff as part of this process. Once a diagnosis is established, he develops an individualized care plan that may include medication management for co-occurring conditions, family education and support, coordination with therapists and schools, and social skills guidance. Care is adjusted over time as the patient grows and their needs evolve.

Yes, and adult autism diagnoses are becoming increasingly common as awareness has grown. Many adults spent years wondering why social situations felt so much harder for them, why they needed more recovery time after social events, or why certain sensory experiences were overwhelming when others barely noticed them. A diagnosis in adulthood can be clarifying and validating. Dr. Willison conducts thorough adult autism evaluations and approaches late-identified patients with the care and context this kind of assessment requires.

Yes. Research has shown that autism can present differently in girls and women, which has historically led to underdiagnosis and delayed diagnosis in this group. Girls are more likely to mask their autistic traits by carefully observing and imitating social behavior, which can make their challenges less obvious to others but no less real or exhausting. Emotional presentations may be more prominent, and intense interests may appear more socially conventional. Dr. Willison is aware of how autism presents across genders and takes a thorough approach to evaluation for all patients.

There is no medication that directly treats autism. However, medications are commonly used and can be very effective for co-occurring conditions such as anxiety, ADHD, depression, sleep difficulties, and significant irritability or aggression. Dr. Willison evaluates each patient individually and recommends medication only when it is likely to improve quality of life and functioning. He starts at conservative doses, monitors closely, and involves patients and families fully in the decision-making process.

Autism can affect learning in many ways, including challenges with sensory processing in busy classroom environments, social demands during group work and unstructured time, executive functioning skills like planning and organization, and communication with teachers and peers. Children with an autism diagnosis are entitled to a formal educational evaluation and, if eligible, an Individualized Education Program (IEP) or 504 Plan that provides accommodations and services. Dr. Willison can provide documentation to support these processes and can communicate with school teams as needed.

Many autistic adults do live independently, and others live with varying levels of support. The range of outcomes is wide and depends on the individual’s strengths, challenges, access to support, and the quality of transition planning they received. With early and appropriate support, many autistic individuals go on to hold jobs, pursue higher education, build meaningful relationships, and live full and satisfying lives. Dr. Willison supports this trajectory through proactive transition planning and long-term care.

Research strongly suggests a significant genetic component to autism. Parents of an autistic child have a higher likelihood of having another autistic child than the general population, and autism is more common among identical twins than fraternal twins. However, genetics are not the whole story. Multiple genes appear to be involved, and environmental factors during early development also play a role. Having a family member with autism does not mean a diagnosis is inevitable, and many autistic individuals have no known family history.

Autism and ADHD are distinct conditions with different core features, though they share some overlapping characteristics such as difficulties with attention, impulsivity, and social functioning. Autism is primarily characterized by differences in social communication and restricted or repetitive behaviors. ADHD is characterized by inattention, hyperactivity, and impulsivity. The two conditions frequently co-occur, and research suggests that between 50 and 70 percent of autistic individuals also meet criteria for ADHD. When both are present, both must be addressed in the treatment plan. Dr. Willison has experience evaluating and treating patients with both diagnoses.

DID YOU KNOW?

Frequently Asked Questions

Autism spectrum disorder is a neurodevelopmental condition characterized by differences in social communication, restricted or repetitive behaviors and interests, and often heightened or reduced sensitivity to sensory input. It is called a spectrum because the presentation varies widely from person to person. Autism is not a disease or a defect. It is a different way of being in the world, and while it brings real challenges, it also comes with genuine strengths.

Early signs in young children may include limited eye contact, not responding to their name, delayed speech or language development, little interest in playing with other children, and repetitive movements such as hand-flapping or rocking. In older children and adults, signs may include difficulty with back-and-forth conversation, taking language very literally, strong preferences for routines, intense interest in specific topics, difficulty in group social settings, and sensory sensitivities. Signs look different at different ages and across genders.

Dr. Willison begins with a comprehensive psychiatric evaluation that includes a detailed history, clinical interview, and validated assessment tools. For children, he gathers information from parents and school staff as part of this process. Once a diagnosis is established, he develops an individualized care plan that may include medication management for co-occurring conditions, family education and support, coordination with therapists and schools, and social skills guidance. Care is adjusted over time as the patient grows and their needs evolve.

Yes, and adult autism diagnoses are becoming increasingly common as awareness has grown. Many adults spent years wondering why social situations felt so much harder for them, why they needed more recovery time after social events, or why certain sensory experiences were overwhelming when others barely noticed them. A diagnosis in adulthood can be clarifying and validating. Dr. Willison conducts thorough adult autism evaluations and approaches late-identified patients with the care and context this kind of assessment requires.

Yes. Research has shown that autism can present differently in girls and women, which has historically led to underdiagnosis and delayed diagnosis in this group. Girls are more likely to mask their autistic traits by carefully observing and imitating social behavior, which can make their challenges less obvious to others but no less real or exhausting. Emotional presentations may be more prominent, and intense interests may appear more socially conventional. Dr. Willison is aware of how autism presents across genders and takes a thorough approach to evaluation for all patients.

There is no medication that directly treats autism. However, medications are commonly used and can be very effective for co-occurring conditions such as anxiety, ADHD, depression, sleep difficulties, and significant irritability or aggression. Dr. Willison evaluates each patient individually and recommends medication only when it is likely to improve quality of life and functioning. He starts at conservative doses, monitors closely, and involves patients and families fully in the decision-making process.

Autism can affect learning in many ways, including challenges with sensory processing in busy classroom environments, social demands during group work and unstructured time, executive functioning skills like planning and organization, and communication with teachers and peers. Children with an autism diagnosis are entitled to a formal educational evaluation and, if eligible, an Individualized Education Program (IEP) or 504 Plan that provides accommodations and services. Dr. Willison can provide documentation to support these processes and can communicate with school teams as needed.

Many autistic adults do live independently, and others live with varying levels of support. The range of outcomes is wide and depends on the individual’s strengths, challenges, access to support, and the quality of transition planning they received. With early and appropriate support, many autistic individuals go on to hold jobs, pursue higher education, build meaningful relationships, and live full and satisfying lives. Dr. Willison supports this trajectory through proactive transition planning and long-term care.

Research strongly suggests a significant genetic component to autism. Parents of an autistic child have a higher likelihood of having another autistic child than the general population, and autism is more common among identical twins than fraternal twins. However, genetics are not the whole story. Multiple genes appear to be involved, and environmental factors during early development also play a role. Having a family member with autism does not mean a diagnosis is inevitable, and many autistic individuals have no known family history.

Autism and ADHD are distinct conditions with different core features, though they share some overlapping characteristics such as difficulties with attention, impulsivity, and social functioning. Autism is primarily characterized by differences in social communication and restricted or repetitive behaviors. ADHD is characterized by inattention, hyperactivity, and impulsivity. The two conditions frequently co-occur, and research suggests that between 50 and 70 percent of autistic individuals also meet criteria for ADHD. When both are present, both must be addressed in the treatment plan. Dr. Willison has experience evaluating and treating patients with both diagnoses.

Schedule an Autism Evaluation in Los Angeles

Whether you are seeking a first evaluation for your child, looking for a second opinion, or an adult who has always suspected they might be autistic, Dr. Willison is here to help.

Dr. L. David Willison IV, MD, PhD, is a Board-certified Adult and Child/Adolescent psychiatrist in Los Angeles who provides thorough autism evaluations and compassionate, long-term care for patients of all ages. He works closely with families, schools, and other providers to ensure that every patient gets the support they need at every stage of life.

Call 415-412-4613 or visit ldavidwillisonmdphd.com to schedule your consultation today.