Welts On Hand, Itchy, No Pus. What Is It?

About six days ago I noticed several mosquito bite-like welts on my hand . They became more pronounced the next day and extremely itchy. I put aloe vera gel on them regularly and the itching subsided a little. They went from mosquito bite-like welts to smaller red dots. However, on the third day, I started to get a couple more itchy spots on my right arm , but no where else on my body. Then on the fourth day I got a bunch of itchy spots on my right arm, just a couple on my left arm, and over both of my shoulders. My left arm is better now, but my right arm looks as if it was bitten about 30 times. However, they are definitely not mosquito bites. There is no pus or fluid inside, they are just raised welts. During this time, I have had no fever, tiredness, stomach pain, or any other symptoms. It is purely a skin itch and rash. I have checked online in many places. I am pretty certain it is not scabies or chicken pox . It could possibly be a mild case of shingles though. I have never had chicken pox or any other skin disease. I can send pictures if that would help. I am an otherwise very health 26 year-old weight 160 pounds. Thanks for your input!