hi i had gone through your query and understand your concerns. i would come up with the possibility of ALLERGY-URTICARIA
is the cause for your sufferings.
-inherited tendency for allergy- insect bite or other bite may activate the immune system abnormally is the cause for your sufferings.
the best treatment is homeopathy
for you ,if you taking Homeopathic
medicines gives safe and permanent cure for your allergic complaints from its root cause
consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your complaints
I hope this is helpful for you, thank you