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Conditions list medically reviewed by George Krucik, MD, MBA
Chronic fatigue syndrome (CFS) is a debilitating disorder characterized by extreme tiredness that can't be explained by an underlying medical condition.
Anemia happens when the number of healthy red blood cells in your body is too low. Red blood cells carry oxygen to all of the body's tissues.
Common colds and influenza are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Shared…
A cold is a common viral infection of the upper respiratory tract–namely, your nose and throat. A runny or stuffy nose, sneezing, coughing, and sore throat are common…
Fibromyalgia is a disorder tied to widespread pain in your muscles and bones, areas of tenderness, and fatigue. Learn about its symptoms, treatment, and more.
Congestive heart failure (CHF) is a chronic condition that affects the chambers of your heart. Learn more about CHF, including symptoms and risk factors.
Heart failure is characterized by the heart's inability to pump an adequate supply of blood. Learn about heart failure symptoms, causes, types, and treatment.
Acute bronchitis causes coughs that produce mucus. You don't need antibiotics, but bed rest and home care can help.
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.
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.
If left untreated, HIV can lead to AIDS. AIDS weakens your immune system to the point where it can no longer fight off disease and infection. Learn more.
Bipolar disorder is a mental illness marked by extreme shifts in mood ranging from mania to depression. It is also called bipolar disease or manic depression.
Anorexia nervosa is an eating disorder that can result in severe weight loss. Learn more about warning signs and treatment.
Primary hypothyroidism means your thyroid gland doesn't produce enough hormones. Learn about causes, symptoms, diagnosis, and treatments.
Low potassium levels in your blood can cause weakness, fatigue, and abnormal heart rhythms. Find out how to treat hypokalemia.
Low blood sodium, or hyponatremia, occurs when water and sodium are out of balance in your body. A quick drop in sodium levels can cause weakness, headache, nausea, and…
Congestive cardiomyopathy, also known as dilated cardiomyopathy, is characterized by a weak, enlarged primary pumping chamber in the heart. This could be caused by…
A child is said to have failure to thrive when they don't meet recognized standards of growth. According to Kids Health, failure to thrive isn't a disease or disorder…
Obesity is an epidemic in the U.S. This condition puts people at a higher risk for serious diseases, such as type 2 diabetes, heart disease, and cancer.
Insomnia is a sleep disorder. Individuals who suffer from insomnia find it difficult to fall asleep, stay asleep, or both. They don't feel refreshed when they wake up…
This feature is for informational purposes only and should not be used to diagnose. Please consult a healthcare professional if you have health concerns.