Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
Rashes and swelling of hands and arms with
severe itching seems to be most probably due to
allergic reaction that can be commonly due to skin irritants like creams or lotions, detergents, soaps, poison ivy. However, certain medicines, foods and bed bugs or bug/
insect bites can also be a cause.
I would suggest you to consult an Allergist and get evaluated and a thorough clinical evaluation and investigations like allergic tests like
Patch test, RAST test, food challenge test etcetera can help in diagnosis and treatment.
The allergist can advise to take oral anti-allergics as well as injectable steroids for relief. As of now, you can take anti-allergics like
Benadryl, Allegra to control the itching and swelling.
Do cool compresses. Application of calamine lotion can help in soothing the skin.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Honey Arora