Hi. Greetings. Dear Sir, itching and rashes could be due to many many reasons and may be tough for us to diagnose with the limited history you have provided. I would wish to request you to send images of the rashes or bumps you have on private follow up chat. Most likely you have urticaria. This may need prolonged treatment for a few weeks to months with oral anti histamines to control you symptoms. You could.Meet a dermatologist for detailed evaluation and treatment. Hope this helps. warm regards, Dr Govind S Mittal, Excel care hospital, Bangalore.