Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that itchy red skin rashes that occur suddenly on wrist,lower arms and lower legs seems to be due to
Contact Dermatitis that can occur due to
allergic reaction some unknown allergen..
As soon as you are exposed to the allergen there is occurrence of allergic reaction..
Common allergens are Poison ivy, certain detergents, skin cosmetics, leather, latex etc..
I would suggest you to consult an Allergist and get evaluated and a thorough clinical evaluation and investigations like Prick test,
patch test, RAST test and food challenge test can help in diagnosis and treatment can be planned accordingly..
As of now you can take anti allergics like Allegra or
benadryl..
You can apply steroid based creams over it..
Do cool compresses..
Apply calamine lotion as it will soothe the skin..
You can be given an
immunotherapy to reduce the severity of allergic reaction.
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.