Autism and Substance Use: Why Undiagnosed Autism Raises the Risk
This post on autism and substance use is written by Olivia Keyte, M.S.
Key Insights
- Undiagnosed autism: Autism that has not been formally identified by a professional, which may leave an individual without an understanding of their needs or access to appropriate support.
- Masking: Suppressing or concealing autistic traits to meet social expectations or appear neurotypical.
- Social exhaustion: Mental and emotional fatigue from navigating social situations, interpreting expectations, and masking autistic traits.
- Self-medication: Using alcohol or other substances to manage anxiety, emotional distress, sensory overload, or other uncomfortable experiences.
- Substance use disorder (SUD): A pattern of alcohol or drug use that causes clinically significant impairment or distress.
- Protective factors: Supports and resources that may reduce the likelihood of harmful substance use, including appropriate mental health care, autism-informed treatment, social support, and effective coping strategies.
Autism and substance use are connected in complex ways that are not fully understood. Autism does not automatically increase an individual’s risk of addiction, but research suggests some autistic people face vulnerabilities related to mental health, social stress, sensory differences, and unmet support needs. When autism goes undiagnosed, individuals may struggle to understand why certain situations feel overwhelming or why conventional coping strategies do not work for them. Some may turn to alcohol or other substances to manage these experiences.
Research has identified autistic individuals who report using substances to cope with mental health symptoms, manage aspects of their autistic experiences, or navigate social situations. This connection is essential to understand for improving early identification, prevention, and treatment, while avoiding the assumption that all autistic people are at increased risk.
Autism and Substance Use
Autistic burnout is a state of intense physical, mental, and emotional exhaustion that builds up over time. In one landmark study, autistic adults described it as having their internal resources “exhausted beyond measure.” Researchers found it often involves chAutism is a neurodevelopmental condition associated with differences in social communication, sensory processing, and patterns of behavior or interests. Autistic individuals have diverse strengths, needs, and experiences, and some navigate adulthood without recognizing that their experiences may be related to autism.
An individual with undiagnosed autism may spend years trying to understand social expectations, managing sensory discomfort, or coping with anxiety without knowing why these experiences are so challenging. They may be told they are too sensitive, socially awkward, or overly anxious rather than receiving an assessment that considers their developmental history.
When these challenges go unrecognized, some individuals may experiment with substances to make daily life feel more manageable. Alcohol may seem to reduce social anxiety, while other substances may be used to manage emotional distress, sensory experiences, or difficulty concentrating. These effects may feel helpful in the short term, but substance use can add mental, physical, and functional difficulties.
Primary Risk Factors
Self-medication and Emotional Distress
One potential pathway between undiagnosed autism and substance use is self-medication. Some autistic individuals experience anxiety, depression, trauma-related symptoms, or chronic stress. Without appropriate assessment and support, they may turn to substances to manage these experiences.
Someone with intense anxiety before social interactions may find that drinking temporarily makes conversation easier. Another may use cannabis or other substances to reduce sensory discomfort or quiet overwhelming thoughts. These behaviors do not necessarily indicate a substance use disorder, but they become concerning when substance use is a primary coping strategy or begins to cause harm.
Masking and Social Exhaustion
Masking involves concealing autistic traits or imitating neurotypical ones. An individual may rehearse conversations, monitor facial expressions, suppress natural movements, or carefully observe others to determine how to behave. Masking can help individuals navigate social situations, but it can also be mentally exhausting. Someone who has not been identified as autistic may believe the effort required to socialize is a personal weakness rather than a result of continually adapting to unfamiliar expectations.
Some individuals may use substances to feel more comfortable socially, reduce self-consciousness, or make masking feel less demanding. In these situations, substance use may become associated with socializing, dating, attending events, or building relationships.
Sensory Overload and Difficulty Regulating Emotions
Autistic individuals may respond differently to sound, light, touch, crowds, or other sensory information. Environments that neurotypical individuals find comfortable may be physically or emotionally overwhelming for some autistic people. When sensory distress is persistent and support is unavailable, an individual may seek ways to reduce discomfort. Some report using substances because they believe they help them relax, sleep, concentrate, or tolerate overwhelming environments.
Emotional regulation can also play a role. Difficulty identifying, communicating, or managing intense emotions may leave an individual unsure how to cope with distress. If substances temporarily change how they feel, repeated use may become an appealing coping mechanism. However, substance use does not address underlying sensory or emotional needs and can affect sleep, judgment, mood, and physical health. Effective support identifies the source of distress and develops safer, individualized ways of managing it.
Missed Diagnosis and Barriers to Treatment
When autism goes unrecognized, an individual may receive support that does not account for their communication style, sensory needs, or developmental experiences. Anxiety, depression, attention difficulties, and other co-occurring conditions may be treated without recognizing that autism may also be relevant. This does not mean treatment for these conditions is inappropriate, but an incomplete understanding of someone’s needs can limit how well treatment fits them.
Undiagnosed autistic people may also face barriers when seeking help for substance use. Traditional treatment settings can involve unfamiliar routines, group discussions, busy environments, indirect communication, or expectations that are difficult for some autistic individuals to navigate. If providers do not recognize or accommodate these differences, individuals may find it harder to participate or communicate what they need.
Identifying previously unrecognized autism can help clinicians understand an individual’s experiences more accurately and adapt treatment accordingly. An autism-informed approach can address both substance-related concerns and the circumstances that may contribute to them.
Conclusion
Undiagnosed autism may contribute to substance use vulnerability for some individuals when social exhaustion, sensory distress, emotional difficulties, or co-occurring mental health conditions remain unsupported. Some autistic people may turn to substances to manage these experiences, particularly when they do not understand their needs or cannot access the right support.
However, autism is not a direct cause of addiction. Research is still developing, and the relationship between autism and substance use varies across individuals and circumstances. Further research is needed to understand how delayed diagnosis, masking, co-occurring mental health conditions, and barriers to treatment influence substance use outcomes.
Improving early identification and providing accessible, individualized support may help clinicians recognize unmet needs before harmful coping patterns develop. Ultimately, the goal is not simply to reduce substance use but to understand why it occurs, address the factors that contribute to it, and ensure autistic individuals receive respectful and effective care.
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