I am 77 yrs old, African American, and I have suffered from itching all my life. I am certain, it is hereditary, because my mother was given penicillin, and almost died from the injection. I just simply itch all the time, arms and legs and all over. I think temperature is related to the itch, because cold or hot seems to cause me to itch. I really do not like cold weather, and will relocate to Palm Coast. Fl. I thought it is an allergy, and I take Claritin D, but it does not help. Would appreciate any help.