They could be insect bites but I'm not sure. Probably mosquito or horsefly.
Small red bumps on the skin could be signs of rashes or measles. It could also be a precursor to acne problems.
When u shave it gives u red bumps I get them all the time in the winter, cuz my legs are dry
if your arms and legs itch, you might have mosquito bites or a rash. check for large red bumps or masses or small red bumps. If you have a dog or a cat, you might have ticks. Also, you might have an allergy you are not aware of. If you dont see any red bumps or you dont have a pet, you should see the doctor.
molluscum?
Capillaries tighten in cold weather , and close around individual hairs.
This sounds like eczema (I have it).
If you live in the southern US or Carolinas it could be Chigger Bites.
Red bumps on top of head hurt? Wounding what it could be?
The burning red bumps could be many different things. Some things it may be is poison ivy, hives or scabies.
A diagnosis cannot be made from a description. See a doctor. It sounds like it may be heat bumps or sweat bumps. I believe it may also have to do with thighs rubbing together that makes bumps. I was told it could be HPV
Your skin could be irritated from the bacteria that's in the water.
herpes