Learn how to identify the symptoms of this serious, mosquito-borne infection and how to protect yourself from infection.
Disease
Dural arteriovenous fistulas
Learn about these rare, irregular connections that can occur between arteries and veins in the protective covering of the brain and spinal cord.
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
Factitious disorder
In this serious mental health condition, people deceive others by pretending to be sick. They do this by faking symptoms, purposely getting sick or hurting themselves.
Disease
Factor V Leiden
This inherited clotting disorder can increase your chance of developing abnormal blood clots, most commonly in your legs or lungs.
Disease
Familial Mediterranean fever
This genetic autoinflammatory disorder causes recurrent fevers and painful inflammation. Treatment can prevent attacks and complications.
Disease
Familial adenomatous polyposis
This inherited condition leads to colon cancer. Treatment consists of having frequent screenings and having surgery to remove all or part of the colon.
Disease
Familial hypercholesterolemia
This inherited condition can cause extremely high levels of "bad" cholesterol, even in childhood, and can lead to early heart attacks and death.
Disease
Farsightedness
Do you see distant objects clearly, but develop a blur as they come close? This vision condition, called farsightedness, is easily corrected with prescription lenses.
Disease
Fatty liver disease (MASLD)
This liver condition is becoming more common in the Western world. Find out how to treat and prevent this potentially dangerous liver disease.
Disease
Febrile seizure
These frightening but generally harmless seizures are triggered by a fever and affect infants and young children.
Disease
Fecal incontinence
Learn about this common issue that causes some people to avoid social situations. Treatments are available.