Understanding Autism Spectrum Disorder Across the Lifespan

Lisa Konick, PhD
Lisa Konick, PhD
July 7, 2025

Autism Spectrum Disorder (ASD) is a neurodevelopmental condition characterized by differences in communication, social interaction, behavior, and sensory processing. At our practice, we specialize in autism-focused therapy and comprehensive assessments for individuals across all ages. One of the most important things we help families and individuals understand is that autism is not a one-size-fits-all diagnosis—its presentation can vary widely from person to person and can look quite different across the lifespan.

Common Signs of Autism

While the symptoms of autism can differ significantly between individuals, there are common patterns that often emerge. These features may also evolve with age, which is why our approach is developmentally informed and individually tailored.

In Children

Autism often becomes noticeable in early childhood, particularly through communication and play behaviors. Common signs include:

  • Communication Challenges: Delayed or scripted speech, limited use of gestures, and difficulties initiating or maintaining conversations.

  • Social Interaction: Reduced eye contact, difficulty interpreting social cues, a preference for solitary play, or limited imaginative play.

  • Behavioral Patterns: Repetitive movements (e.g., hand-flapping, spinning, or rocking), strong adherence to routines, and focused interest in specific objects or topics.

In Teens

During adolescence, the social demands of life become more complex, and symptoms of autism may show up in new or intensified ways:

  • Social Relationships: Difficulty navigating peer relationships, misunderstanding social norms, or increased anxiety in social settings.

  • Communication: Struggles with interpreting sarcasm or abstract language and maintaining back-and-forth conversations.

  • Behavioral Traits: Sensory sensitivities (e.g., to sound, texture, or light), rigid or black-and-white thinking, and strong preoccupation with specific interests.

In Adults

Autism in adults may be harder to recognize, particularly if they have learned to “mask” symptoms over time. However, underlying challenges often remain:

  • Interpersonal Relationships: Difficulty forming or maintaining close relationships, interpreting social boundaries, or recognizing others’ emotions.

  • Work and Daily Life: Challenges with job interviews, workplace dynamics, daily routines, and adapting to unexpected changes.

  • Behavioral and Sensory Issues: Preference for structure, discomfort with change, and ongoing sensory sensitivities that affect comfort and functioning.

Autism and Gender Differences

Understanding how autism presents across gender identities is essential. Research and clinical experience show that autism may manifest differently in girls and individuals assigned female at birth, who are often underdiagnosed or misdiagnosed. These individuals may display fewer repetitive behaviors, have stronger language skills early on, or mask their social difficulties by mimicking peers. Additionally, gender-diverse and nonbinary individuals are also more likely to be diagnosed with autism, underscoring the need for affirming, inclusive, and nuanced assessment practices. At our practice, we approach all evaluations and therapy with sensitivity to gender diversity and work to ensure each individual feels seen and understood.

Co-occurring Conditions

Autism often coexists with other conditions, and recognizing these overlapping profiles is key to accurate diagnosis and effective treatment planning. Some common co-occurring conditions include:

  • ADHD (Attention-Deficit/Hyperactivity Disorder)

  • Anxiety Disorders

  • Depression

  • Learning Disabilities

  • Sensory Processing Differences

  • Obsessive-Compulsive Traits

These overlapping features can sometimes obscure or complicate the diagnostic picture, which is why our team uses comprehensive, evidence-based assessment tools and considers the full context of each individual’s developmental, emotional, and behavioral history.

Lifespan Support for Individuals with Autism

While these are some of the common signs we see in our treatment setting, we recognize the incredible diversity in how autism presents. Every child, teen, and adult with autism has a unique profile of strengths and needs. Our team is here to offer support and guidance at every stage of life—through early diagnosis, school transitions, adolescence, college and career planning, and adult living.

We offer tailored assessments and therapy interventions that are developmentally appropriate, culturally responsive, and grounded in compassion. Whether you are seeking support for your child or pursuing an adult diagnosis for yourself, we are here to help you navigate your journey with clarity and confidence.

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