Why is there a pink spot on my leg that i had since was kid its not bump or itch?

There are several possible causes for a pink spot on your leg that you have had since childhood and that does not itch or raise a bump. Some possibilities include:

Birthmark: Some people are born with pink spots on their skin, which are known as birthmarks. These spots can vary in size, shape, and color, and they are usually harmless.

Nevus: A nevus, also known as a mole, is a common skin growth that can appear anywhere on the body. Nevi can be various colors, including pink, and they are usually non-cancerous.

Hemangioma: A hemangioma is a non-cancerous growth of blood vessels that can occur anywhere on the body. Hemangiomas are often present at birth or appear in early childhood, and they can sometimes fade or disappear over time.

Capillary malformation: A capillary malformation is a congenital birth defect that affects the capillaries, which are small blood vessels. Capillary malformations can appear as pink or red spots on the skin, and they are usually non-cancerous.

Port-wine stain: A port-wine stain is a type of capillary malformation that is present at birth and does not fade over time. Port-wine stains are usually red or purple, but they can sometimes appear pink.

If you are concerned about the pink spot on your leg, it is a good idea to see a doctor or dermatologist for an evaluation. They can examine the spot and determine the cause, and they can discuss any treatment options if necessary.