Cysts
Cysts are unnatural growths that branch out as lumps under the skin and appear on the skin surface. This is an unnatural tissue that looks like a sac and is filled with either gas, pus, liquid or other semi solid material which could be painful or not at all. There are several reasons for the growth of a cyst which vary from infections, genetically inherited conditions, tumors, obstruction in the flow of bodily fluid or other defects.