Severe itchy arms, lower abdomen, and legs with small red do

Does Dr.Pepper contain much caffeine, as caffeine makes itching worse so would make the itching continue instead of go away naturally.

I have the same issue but I stopped drink sodas and caffeine over 5 years ago.

Maybe it was the sugar?

I had itchy red spots when i first started exercising. When i was out in the sun they would get irritated. From a little spot behind my arms on my triceps then spread over 85% of my body for over six months (Hands, Chest, Torso, Back, Arms, thighs) i had an uncomfortable sleep and @ nights it seemed to be itchy. I went to 3 different doctors who said it was some kind of viral infection and none of the creams prescribed worked. After three months I got fed up. I researched natural remedies to do with itching and heat rashes alike. I slept with clean breathable sheets,kept them uncovered as much as possible, to avoid irritating them, If the spots became itchy i never itched them as i didn't want them to spread more and more, washed my hands regularly and I made a natural mixture of tea tree oil and organic coconut oil and it gave me such a relief. Now its been a year or so and what do you know i have it back! After reading these comments I'm guessing soda intake and stress could possibly be the cause. Time to meditate and take time for myself then :)