Doc what is the medicine for skin allergy like...

What is the treatment of skin itching?
First of all you should visit the dermatologist to assess your condition fully and carefully in order to treat the cause of your condition.There are different types of medications that can be used in your condition including LORATIDINE one tab a day for 5 days and Quadriderm cream twice a day. Fucidin cream with antibiotic such as Augmentin can be prescribed for bacterial infection. Furthermore, you have to avoid any food, perfumes or any substances that might provoke your condtion.
 
Diagnosis ?
Full medical history and clinical examination should be done by the dermatologist. Complete blood test for bacterial infections of the skin and elevated white blood cells. Sometimes skin biopsy can be done in some cases.

What are the causes of skin itching and rash?
1. Skin allergy
2. Bacterial infection.
3. Viral infections.
4. Fungal infections
5. Eczema.
6. Psoriasis. 
7. Others

Tip:
Follow up with a dermatologist.