Sore on your leg it looks like a big pimple what could be?

Possible causes of a sore on the leg that looks like a big pimple:

- Boil: A boil is a common skin infection that occurs when bacteria enter a hair follicle and cause it to become inflamed. Boils can occur anywhere on the body but are most common on the face, neck, back, and buttocks. They typically start as small, red bumps that gradually become larger and more painful. Eventually, a boil will rupture and release pus.

- Pilonidal cyst: A pilonidal cyst is a small, fluid-filled sac that forms in the crease between the buttocks. Pilonidal cysts are caused by ingrown hairs or other foreign objects that become lodged in the skin. They can be painful and may become infected.

- Hidradenitis suppurativa: Hidradenitis suppurativa (HS) is a chronic skin condition that causes inflamed, swollen bumps on the skin. HS typically affects the armpits, groin, and buttocks. The bumps can be painful and may rupture and release pus.

- Insect bite or spider bite: Insect bites and spider bites can cause a variety of symptoms, including swelling, redness, pain, and itching. Some insect bites and spider bites can also cause more serious problems, such as infection or allergic reactions.

If you have a sore on your leg that looks like a big pimple and are not sure what it is, it is important to see a doctor to get a diagnosis. The doctor can determine the cause of the sore and recommend the best treatment.