Hi, Welcome to HealthcareMagic Forum.
Where exactly on your Body do you have them? First get yourself examined by a Dermatologist
and get his opinion. You are having nothing but Cutaneous skin tags
which are small, usually harmless skin growths. Is your father overweight? and what about you? One thing I would like to let you know is, Treatment is usually not necessary unless they are irritating or are cosmetically displeasing. They may be removed by surgery, by cryotherapy
or by electrocautery. See your Doctor if the bleed or if they increase in size or number.
Wish you Good Health, Take Care.