34yrs male patient feels itching, pining and needling sensation on sweating while working hard or during exposure to sun shine from last one year

A 6yrs male patient have this problem since 5 months... itching, spreading slowly all over the body ..... please tell me the diagnosis and treatment?

One year 9 months boy having sever itching and patches over the knee folds and face, scapula region , body .. sir , madam please advise

One year 9 months boy itching and rash over the buttock area and knee folds and abdomen and legs on off since birth .. sir / madam please advise

This rash 3yr old male. itchy progressive.diagnosis and treatment please