Hi dr.my skin little get rash because of hyderquin...

Hydroquinone topical contact dermatitis 
Contact dermatitis is defined as development of skin rash and irrtation after usage of a chemical substance locally on the skin, its manifisted as development of localized rash and sking itching at the site of appliction, its treated by discontinuation of the topical agent, use Betamethason valeriate cream twice a day and consult a dermatologist if symptomes perisisted 
Investigations 
Clincal exam is the only required diagnostic method 
Causes 
Contact dermatitis 
Chemical burn 
skin allergy 
Our advice 
You are adviced to have a healthy diet rich in minerals and vitamins, avoid allergic substances and avoid smoking