If skin is burned it can also be itchy right? i have small red blisters only on my arms, could it be skin cancer?? i stay out of the sun just in case

See a doctor: You should see your doctor to be sure. Blisters on the arm could occur from a severe sunburn. If so, these should resolve as the burn heals. Scaly, red areas over the arms can be actinic keratosis, a pre-cancerous condition. However, there are many things, including infections, that can cause red blisters, so it is best to see either your family doctor or a dermatologist.