unfortunately it's difficult to give you a good answer without being able to see the bump. if you're talking about a lesion (like a mole) that is new or has changed color (to blue) and has become itchy you definitely should have it looked at. the back of the thigh would be an unusual place for a skin cancer but not if you tanned regularly when you were younger. if you're talking about a bruise-type lump that feels like it's below the skin you might consider a wait-and-see attitude. it could actually be a bruise. or perhaps a hematoma. i don't think the small lump represents a medical emergency. but it wouldn't hurt to have your primary care provider or a dermatologist take a look at it just to be safe. wishing you well!
i have a small lump on the back of my thigh its dark blue and it hurts. i notice a small lump on my thigh its dark blue should i go get it check or just watch it closely