 [ Symptoms ] tb tests should be done how often i had a tb test as a child in 1996 i need proof of a tb test for department of education employment will i be required to get another one [ Disease ] hi it is not dangerous however if bleeding frequency increase or if size increase you will have to suspect melanoma notice that it can turn to melanoma after years so for now do not worry and just observe if its causing discomfort then just have it removed good luck