Cyst
lipoma
A hard bump under skin on the side of the nose that comes and goes sounds like a common zit. However, it also could be a calcium deposit.
A bump is a lump like, for example, a bump on your skin or a bump in a road.
The inside of the knee, or knee "pit," is the popliteal fossa. The front of your knee is the prepatellar skin. wagina
Yes, it is important to have the bump on your neck checked by a doctor.
It could be chicken pox
Similar to a bee-sting reaction; you have just introduced a toxin under your skin.
Possibly a blood clot. You really need to let a doctor look at this thing.
Bruises or swollen.
keloid...
Yes, some people are more bruising than others. If bump remains for longer than a few days without change, tell your doctor.