What are the symptoms of autism in adults?

Nov 17, 2025 Source: Cainiu Health
Dr. Zhang Baohua
Introduction
Adults with autism spectrum disorder may exhibit impairments in social interaction, atypical communication, restricted interests, repetitive behavioral patterns, and abnormal sensory sensitivities. These symptoms are typically persistent and can affect daily functioning and social abilities. If symptoms significantly interfere with daily life or self-regulation, timely medical evaluation is recommended. Individuals often experience difficulty establishing and maintaining interpersonal relationships.

Adults with autism spectrum disorder may exhibit symptoms such as impaired social interaction, atypical communication, narrow interests, repetitive behavioral patterns, and abnormal sensory sensitivities. These symptoms are typically persistent and can affect daily functioning and social adaptation. If symptoms significantly interfere with daily life or cause difficulties in self-regulation, timely medical evaluation is recommended.

1. Impaired social interaction: Difficulty forming and maintaining interpersonal relationships; avoiding eye contact; challenges in understanding others' emotions and social cues; feeling more comfortable when alone; reluctance to participate in group activities; experiencing anxiety or discomfort in social situations.

2. Atypical communication: Rigid or inflexible language use, including excessive verbosity, repetitive phrases, or difficulty understanding others; challenges engaging in reciprocal conversations; noticeable deficits in nonverbal communication, such as gestures and facial expressions.

3. Narrow range of interests: Intense focus on specific topics or objects, with little interest in other areas. Some individuals may become excessively absorbed in a single activity, and these interests are often resistant to change or redirection.

4. Repetitive behavioral patterns: Insistence on rigid routines, fixed schedules, or specific arrangements of objects. Any changes may trigger intense anxiety or resistance. Repetitive, purposeless movements or ritualistic behaviors may also occur.

5. Abnormal sensory sensitivity: Over- or under-responsiveness to sensory stimuli such as sound, light, or touch. For example, extreme sensitivity to noise, aversion to certain textures, or reduced perception of pain and temperature.

To support individuals with autism, it is important to provide a stable and familiar living environment, respect their behavioral routines and personal interests, use clear and direct communication, encourage participation in suitable social activities, and offer patience and understanding to help them better adapt to everyday life.