
While they are not painful and typically feel smooth and round, problems may arise if a cyst becomes irritated or infected. In that case, it can become red, swollen, tender or drain a thick, smelly discharge. At that point, it’s for the best to consult a doctor.
Other reasons for a cyst to form are minor skin injuries or when a hair follicle becomes blocked. These cysts are more typical at people who experience ongoing skin issues or are prone to acne. Also, they appear more at adults rather than children.