you are probably suffering from an urticarial rash.
it can occur due to contact with allergens in air,in food or on the skin.
common allergens are dust , mite,pollen, peanuts,shelfish,soy products,milk,eggs etc.
worm infestation can also cause frequent
allergic reaction.
detergents,fabric conditioners and cosmetics,insect bite can also cause allergies.
urticarial rash can be treated with antihistamines like
cetrizine,
allegra,avil.
to soothe skin you can apply calapure or anthical lotion.
stay away from the allergens if you find the cause of your allergy.
please take immediate
medical help if it is associated with swelling of lips or tongue and if you develope breathlessness.
take care