Other characteristics

Some autistic people might experience additional symptoms, including:

• Delayed movement, language, or cognitive skills
• Seizures
• Gastrointestinal symptoms, like constipation or diarrhea
• Excessive worry or stress
• Unusual levels of fear (either higher or lower than expected)
• Hyperactive, inattentive, or impulsive behaviors
• Unexpected emotional reactions
• Unusual eating habits or preferences
• Unusual sleep patterns