​Symptoms and Signs - Differential Diagnosis of Autistic Spectrum Disorder

​Symptoms and Signs - Differential Diagnosis of Autistic Spectrum Disorder
• Rett’s syndrome: occurs in females; exhibits head growth deceleration, loss of previously acquired motor skills, and incoordination
• Isolated symptoms of autism: when occurring in isolation, defined as disorders (i.e., selective mutism, expressive language disorder, mixed receptive-expressive language disorder, or stereotypic movement disorder)
• Childhood-onset schizophrenia: follows period of normal development
• Childhood disintegration disorder: development normal until the age of 2 years, followed by regression
• Asperger’s syndrome: lacks the language developmental abnormalities of autism