Testosterone is a hormone that is produced in the testicles in men and ovaries in women. High testosterone levels can cause various symptoms including body hair growth, mood disturbances, and acne. In men, high testosterone levels can cause serious problems such as an enlarged prostate, known as benign prostatic hyperplasia (BPH). The total testosterone range for males aged 19–39 years is 264–916 nanograms per deciliter (ng/dl), and levels above this are considered high. The American Urological Association considers 450—600 ng/dl to be a normal range. High testosterone levels can be a sign of an underlying health condition that increases levels of circulating testosterone in the body. Factors that can raise testosterone levels include acromegaly or Cushing syndrome, which affect the pituitary gland, benign or cancerous adrenal tumors, congenital adrenal hyperplasia, and the use of certain medications, such as fluoxymesterone (Halotestin) and using anabolic steroids.