my grandson 3years completed he got pin warm trouble always even after taking albendezol 4to.5 times.sometime in midnight it comes out with itching

A. Hello! Pinworms are highly contagious and persist because their eggs can survive for two or three weeks on surfaces like bedding, clothing, and toys. Reinfection of an occurs when these eggs are accidentally touched. Treat the entire household. It is important to maintain a good hygiene routine for the child. Consult your doctor for further guidance.