Because a lot of skin diseases are relatively similar, plus simply from the text description may not be too accurate. The first thing you need to do is to go to the hospital and get a diagnosis, so that you can use the right medication for the problem. The general legs of small red spots have two possibilities:

1, is the skin allergies, can take oral anti-allergy drugs such as paracetamol, vitamin C, calcium gluconate, cetirizine or loratadine, external use of parempanol, acetate skin relaxation ice cream ointment or acyclovir ointment, after the treatment, it will be gradually recovered. At the same time, daily life as much as possible to avoid external stimuli and local stimulation, do not eat acid, spicy dishes or other stimulating food, avoid seafood and other foods that can easily cause allergies.

2, may be keratosis pilaris, keratosis pilaris generally do not need special treatment. Eat more vegetables and fruits, keratosis pilaris can be oral vitamin A, supplemented by vitamin E to increase the efficacy of the local can be externally coated with 10% urea cream or 0.05% vitamin A acid ointment can reduce the symptoms. Pay attention to the dietary rules, more light food, do not squeeze the rash, because the rash is easy to leave a small scar after squeezing out.