Cluster headaches are rare and cause severe pain that tends to recur in the same way each time. Cluster headaches occur in groups, or clusters, and each attack lasts about 1 to 3 hours on average.

Detailed information on kidney disorders

Prostatitis is inflammation of the prostate gland and sometimes the area around it. It is not cancer.

Detailed information on obesity surgical treatment, including gastric bypass surgery, and gastric stapling surgery

Detailed information on obesity, including obesity causes, obesity health effects, obesity medical treatment, obesity surgical treatment, maintaining weight loss, and obesity prevention

Shin splints refers to pain and tenderness along or just behind the large bone in the lower leg (the tibia).

Stress fractures are weak spots or small cracks in the bone caused by continuous overuse. They often occur in the foot after training for basketball, running, and other sports.

Patellofemoral pain syndrome means that you have dull pain around the front of the knee (patella). This is where the knee connects with the lower end of the thighbone (femur).

A spine affected by scoliosis shows a sideways curvature and a rotation of the vertebrae, giving the appearance that the person is leaning to one side.

Genes that have alterations, or mutations, can cause cells to become cancerous. Some mutations are inherited and others are "acquired," happening by chance over time.