Expert: Dr Alan Galbraith - 1/9/2004

Question
Hello
My 4 year old son has been prescribed Risperdal to help with his ADHD and PDD/autism symptoms. Can you tell me about Tardive Dyskinesia and neuroleptic malignancy side effects; how commonly do they occur and what should I watch for?

Thank You

Answer
Dear Kerry

Tardive dyskinesia with Risperdal is not common when compared to the older similar drugs. Things to look out for are abnormal movements of the limbs. Abnormal tongue and lip movements are also indicative. Tardive dyskinesia develops after long-term treatment.

Neuroleptic malignant syndrome is manifest by fever and possible convulsions. Muscle rigidity and slow breathing can also occur. Immediate advice and treatment is a necessity. This is relatively rare and tends to occur early in the treatment.

Regards

Dr Alan Galbraith