hi i had gone through your query and understand your concerns. i would come up with the possibility of URTICARIA
is the cause for your sufferings.
possible causes include;
--food and food additives
--physical factors like heat,cold
,sun,exertion,pressure,vibrations are some causes.
i would suggest you taking Homeopathic
medicines gives safe and permanent cure for your complaints
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