Besides the more publicized use of testosterone to increase muscle mass for weightlifters, athletes and body builders, testosterone is also given for maladies like hypogonadism (a hormonal imbalance resulting in low sex drive and low sperm production) in men and for birth control with women.

Lower back pain is relatively common; however, in combination with pain in your lower abdomen, it may indicate a serious condition. If the pain doesn’t go away when you change positions or take pain medication, it’s likely serious enough to warrant immediate medical attention.

Bumps inside the ear seem to appear overnight, causing discomfort and making it difficult to hear in some cases. Although an ear bump isn’t usually a sign of serious illness, some types of bumps can be cancerous.

Steroid eye drops are prescribed to treat eye infections, reduce inflammation and relieve dry eye. But their use is not without potentially harmful side effects. Steroid eye drops can sting your eyes or cause vision changes or reduce your eyes' ability to fight infection.

Cold sores are infectious clusters of fluid-filled lesions that are caused by the herpes simplex virus 1, according to the Mayo Clinic. If you’ve had cold sores, you may notice a cold sore forming a couple of days before you can see it.

The diagnosis is depression and medication advised. It is now time for the patient to take an active role in the selection of an antidepressant. The physician takes a careful history of the symptoms and explains the various types of antidepressants and their side effects.

Skin blisters typically appear as circular, raised areas of fluid that collect underneath the top layer of your skin. The fluid, called serum, is usually clear to yellow in color and comes from your damaged blood vessels. Blisters develop to protect damaged skin from further harm.

Dizziness, nausea and vomiting occur with many diseases and conditions affecting different organ systems. Mild to potentially life-threatening ailments of the gastrointestinal tract, nervous system and cardiovascular system commonly provoke these symptoms.

In the human brain, information must be stored in order for learning to take place. So, the areas of the brain that are most important to learning are those involved in memory. Other crucial areas include regions involved in processing information from the five senses and information about your body.

Diabetics need to watch their dietary intake, limiting foods that contain high amounts of sugar and carbohydrates. A doctor may recommend a certain calorie intake each day to help with weight loss.

Both melanoma and age spots can cause brown lesions on the skin. It is very important to differentiate these two skin conditions. While age spots can be a cosmetic nuisance, they are harmless. Melanoma, however, can be deadly. In fact, melanoma is the most dangerous form of skin cancer.

Hemorrhoids are inflamed and swollen blood vessels in the rectum and anus. This painful condition can occur inside and outside of the body. Symptoms of external hemorrhoids include pain, itching and rectal bleeding.