It is not a "zit" or pimple, as these would not persist for more than a few days. It is likely a mole or similar thickening of the skin. When these are thin and extended, they are referred to as "skin tags".
More than likely, it is an infected hair follicle
It is advisable to have this bump examined by a healthcare professional as soon as possible. Changes in color, especially to black, could indicate various conditions such as infection, bleeding under the skin, or possibly a melanoma. Treatment will depend on the underlying cause, so prompt evaluation is important.
A small bump on the throat of a cat could be a number of things. This could be a lypoma, it could be some type of infected injury, or it could be a tumor.
a penis
it could be an infection that might have caused it.
Small Bump was created in 2011.
you play a small bump on the guitar
The best way to determine that answer is to see your doctor.
There is a possibility it could be a cyst, go check it out with a hand surgeon.
It could be a bug bite,or a infected hair folical.
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Could be a herpes canker sore (small white bumps, sore when pressed).