Conditions list medically reviewed by George Krucik, MD, MBA
Hypoglycemia, or low blood sugar, is a potentially dangerous condition that's most common in people with diabetes. Learn what causes it and how to prevent it.
Dehydration takes place when your body loses more fluid than you drink. The most common cause of water loss from the body is excessive sweating.
Anorexia nervosa is an eating disorder that can result in severe weight loss. Learn more about warning signs and treatment.
Congestive cardiomyopathy, also known as dilated cardiomyopathy, is characterized by a weak, enlarged primary pumping chamber in the heart. This could be caused by…
The thyroid gland produces a hormone that controls how your cells use energy (metabolize). Hypothyroidism occurs when the body doesn't produce enough. Untreated, it can…
Infectious mononucleosis, or mono, refers to a group of symptoms usually caused by the Epstein-Barr virus (EBV).
Hypovolemic shock (hemorrhagic shock) is a life-threatening condition that results when you lose more than 20 percent of your body's blood or fluid supply, preventing…
Cardiogenic shock occurs when the heart has been damaged to the point where it's unable to supply enough blood to the organs of the body.
People with paroxysmal supraventricular tachycardia experience a faster-than-normal heart rate. Learn more about the symptoms, treatments, and outlook.
High blood pressure is often associated with few or no symptoms. Many people have it for years without knowing it.
Atrial fibrillation and flutter are irregular heart rhythms that occur when the upper chambers of the heart beat irregularly or too fast. Fibrillation can be sustained…
In mitral valve prolapse the flaps of the heart's mitral valve do not close correctly, which can make blood leak from one chamber into another. Lifelong heart…
Red blood cells are normally shaped like discs, which allows them to travel through blood vessels. Sickle cell disease causes red blood cells to be sickle-shaped. Read…
The thyroid gland produces a hormone that controls how your cells use energy. Hyperthyroidism occurs when the body produces excessive amounts.
Graves' disease is an autoimmune disorder that causes your thyroid gland to create too much thyroid hormone. Learn the symptoms and your treatment options.
Pneumothorax, or collapsed lung, occurs when air is trapped in the space around your lungs. Learn about the types of pneumothorax and the treatment for it.
A dissection of the aorta means that blood has entered the wall of the artery between the inner and middle layers. It can be serious if the aorta ruptures.
A ventricular septal defect (VSD) is a hole between your heart's lower chambers, or ventricles. Read more about this condition.
Pernicious anemia occurs when your body can't absorb enough vitamin B-12 to function properly. Learn about the signs and symptoms of pernicious anemia.
Pulmonary fibrosis is a condition that causes lung scarring, and stiffness. Learn about the causes, symptoms, and treatment options.
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.