Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain itchy rashes and swollen area or hives that has appeared suddenly and spreading seems to be due to
allergic reaction to any
bug bite or can also be due to exposure to any unknown allergen..
I would suggest you to consult an Allergist and get evaluated and along with a thorough clinical evalutaion he can also advise you allergic testing like
Patch test , RAST test etc to rule out for the exact cause of allergen and avoiding exposure to it can prevent the reaction..
In case if allergic reaction is confirmed as the cause he can advise you anti-allergic medications like Allegra or Levocetrizine and also injectable anti allergics and oral and injectable
steroids..
Application of steroid ointment can also relieve..
Doing cool compresses and application of
calamine lotion can also relieve..
Avoid scratching the lesion to prevent infection..
Hope this information helps.
Thanks and regards.
Dr.Honey Nandwani Arora