Hi,
Your son has
rash on face,hands and legs fo more than a month,as you said. There may be itching also. And the rash may be papulovesicular and there may be eczematisation. Treatment is given,but with poor response,right?
I feel that your son may be having
atopic dermatitis. There may be itchy reddish and eczematous
plaque and patches on face and extremities. You
consult dermatologist to have firm diagnosis.
Atopic dermatitis may be caused by many allergens. Suspected allergens should be avoided. Cows milk,eggs,fish,nuts...etc should be avoided. Contact allergens like house dust,housedust mites,perfume,grass,pollens..etc may be kept in mind.
Antihistaminics,
steroid in tappering dose,application of steroid cream or tacrolimus oint..etc may be considered.
I hope you got my answer.
Thanks.
Dr. Ilyas Patel MD