3. Pustules, otherwise known as pimples
Pimples are painful bumps that are bigger and have a round center. The middle is full of yellowish or white pus on top of red skin. They look like swollen, bigger whiteheads.
Causes:
- Most allergic reactions are caused by food or allergens in the environment.
- Bits from bugs (poisonous)
- When dead skin cells and oil get stuck under the skin