Hi, there are small red bumps on my legs, arms, head, and around the back of my shoulder. At first they were on my scalp and I thought they were lice, because my head was very itchy, but my mom put mustard oil on my head to see if there were any, but there wasn't. Then, I saw the bumps on my legs right after I got out of the shower and I thought they were mosquito bites. There are too many, big and small, in certain areas, like my left forearm, right calf, right above my left knee, and the back of my right shoulder. They do look like mosquito bites, but I'm pretty sure they're not. I have had the chicken pox and measles before, so that can't be it. If it's just a rash, does anyone know how I can treat it? I'm really worried, please help.

Sounds like a rash

The bumps come and go like 2-3 times a day. Could it be caused by allergens or something?