The National Library of Medicine (NLM) explains that testosterone occurs naturally in men and is important for many daily functions such as growth, sex organ functioning and the development of typical male characteristics. Men who experience a low level of testosterone may be prescribed topical testosterone. The application of topical testosterone can improve the levels of the hormone in men but it may produce unwanted side effects, warns Drugs.com.
Effects to Others
The NLM warns users of testosterone to prevent others from coming in contact with the topical gel or the skin where it was applied. This type of contact made by women, children and even pregnant women can result in harm. The NLM suggests women may exhibit unusual hair growth or acne. They point out that children may experience enlarged genitals, pubic hair growth, increased erections, increased sexual desire and aggressive behavior. These effects may be temporary, explains the NLM, but other lasting effects in children may include early bone maturity.
Common Side Effects
EMedTV.com explains that up to 11.7 percent of men will experience an enlarged prostate, 9.3 percent will have abnormal lab test results such as higher cholesterol, up to 8 percent will experience acne, 5.6 percent will have a skin reaction at the site of application, up to 4 percent will experience a headache and up to 3.7 percent will experience difficulty urinating or an increase in urination.
Less Common Side Effects
Other side effects that may occur in 1 to 3 percent of men, as identified by eMedTV.com, include general weakness, emotional instability, breast development or pain, hypertension, decreased libido, nervousness, swollen testes or other abnormalities, dry skin and/or anemia.
Serious Hazards
Drugs.com and eMedTV.com report the incidence rate of serious side effects is below 1 percent of users. Possible serious hazards include depression, hostility, rage, prostate cancer, nausea, vomiting, skin color changes, sleep apnea, swelling of the ankles, trouble breathing, infertility and/or jaundice.
Allergic Reaction
Drugs.com suggests that some users may experience a sensitivity or allergy to the medication. The side effects of allergic reaction can be mild or severe. Drugs.com warns users to look for hives, unexplained rash, itching, swelling of the mouth or throat, wheezing and trouble breathing. These symptoms should be addressed by a medical-care provider as they can lead to serious complications, according to Drugs.com and eMedTV.com.
