hi welcome to HCM -i had gone through your query and understand your concerns. i would come up with the possibility of ALLERGY is the underlying cause,it leads to URTICARIA may be the your sufferings. possible causes of urticaria besides allergy ; --genetic predisposition -emotional stress -internal diseases -physical factors like heat,cold,sun,exertion,pressure,vibrations. -food and food additives -Drugs -insect bites -intestinal worms treatment option; homeopathy is the best medicine,which treat the allergy as well as urticaria from its root causes 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