Minor strains may only overstretch a muscle or tendon, while more-serious injuries may involve partial or complete tears in these tissues.
Disease
Prostate cancer recurrence
Rising PSA after prostate cancer treatment may signal recurrence. Learn how it's diagnosed, what it means, treatment options and outlook.
Disease
Toxic hepatitis
Find out about symptoms and treatment of this liver disease. It's caused by exposure to certain substances, such as alcohol or medicines.
Disease
Popliteal artery entrapment syndrome
Calf pain cramping your style during a workout? Know the symptoms of popliteal artery entrapment syndrome.
Disease
Gangrene
A severe bacterial infection or lack of blood flow can cause body tissue to die. Know the warning signs and symptoms of this life-threatening condition.
Disease
Severe acute respiratory syndrome (SARS)
Learn about this contagious and sometimes fatal respiratory illness. The last known infection was reported in 2004.
Disease
Heartburn
Occasional heartburn is a common, manageable condition — but when is it a problem?
Disease
Pulmonary edema
Get more information about the causes of this potentially life-threatening lung condition and learn how to treat and prevent it.
Disease
Common cold
This common illness of the nose and throat causes a stuffy or runny nose, sore throat, and cough.
Disease
Eye floaters
Many people over age 50 experience eye floaters. Learn more about this common problem, including causes, other risk factors and treatment options.
Disease
Medication overuse headaches
Using medicines that ease headache pain too often can start causing headaches. Learn about prevention and treatment.
Disease
Toxic shock syndrome
This rare complication of some types of bacterial infections can be fatal. Learn about symptoms, risk factors and treatment.