hi welcome to HCM
- i had gone through your query and understand your concerns. i would come up with the possibility of URTICARIA
may be the cause for his sufferings.
to physical factors like heat,cold
-food and food additives
-genetic predisposition with family history of allergy
etc are important factors for the development of his urticaria.
acute urticaria's have a good outlook
-those due to food clear up quickly within few days,and those due to drugs clear up within few weeks.
-the prognosis is good when the specific cause has been established and eliminated.
I hope this is helpful for you, thank you