Follicular cysts are a type of benign ovarian cyst caused by normal hormonal fluctuations during the menstrual cycle. Usually harmless, these fluid-filled sacs grow on the follicles where the egg ...
A lump on the back of the neck can occur due to a cyst, a boil due to an infected hair follicle, or a muscle knot that's unrelated to a serious health issue. While swollen lymph nodes can be a symptom ...