Acromegaly, a hereditary disease caused by excessive secretion of growth hormone. Its complications can lead to cardiovascular, bone and joint, digestive, respiratory, or nervous problems;
Adrenal hyperplasia, in addition to abnormal facial hair, can also manifest as a thick, masculine voice and weight gain. Adrenal hyperplasia can be caused by the presence of tumors or cysts;
Obesity;
Cushing’s syndrome, caused by excessive production of cortisol, also known as the stress hormone, manifests itself with constant headaches, high androgen levels, and a tendency to gain weight quickly.
Hair growth on the chin or neck can be a side effect of taking certain medications. These drugs include anabolic steroids (also known as banned doping substances, used illegally by athletes, for example) and immunosuppressants (which weaken the immune system and are used in the treatment of allergies or autoimmune diseases).