ASD Treatment Centres in ludhiana. ASD Treatment in ludhiana. ASD Centres in ludhiana. KINDS OF AUTISM (CONTINUE) :- RETT SYNDROME :- Rett syndrome is a neurological and developmental disorder that occur mostly in girls and is marked by poor head growth. loss of muscle tone is usually the first symptom. other early symptoms may includeproblems in crawling or in walking and diminished eye contact. They stop using their hands to do things and often develop sterotyped hand movements, such as wringing, clapping, or pattring their hands.