A 3 year old boy with normal developmental milestones with delayed speech and difficulty in communication and concentration. He is not making friends. Most probable diagnosis is –

Delayed speech, difficulty in communication and concentration in a 3 year old child suggests the diagnosis of autism. Autism Autism is a neurologic disroder characterized by - Qualitative impairment in social interaction Qualitative impairment in communication. Restricted repetitive and streotyped patterns of behaviour, interests, and activities.