This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Microcephaly is seen in 
Select and explain. 
A. Autistic disorder, B. Heller's disease, C. Rett's disease, D. Asperger's syndrome
C: Rett's disease
Answer: C: Rett's disease 
Explanation: 3'M' s of Rett's disease :

Mahila (F > M).
Microcephaly.
MECP2.