Learn more about what causes these sexual problems and possible treatments, including medicines.
Disease
Fetal alcohol syndrome
This condition results from alcohol exposure before birth. The exposure causes lifelong problems with behavior, learning, thinking and physical development.
Disease
Fetal macrosomia
When a baby in utero grows much larger than average for gestational age, it can lead to complications during childbirth for both mother and baby.
Disease
Fever
Medications can lower a fever, but sometimes it's better left untreated. Fever may play a role in helping your body fight off infections.
Disease
Fibroadenoma
Learn about this common breast lump. It is not cancer. Unless you have symptoms that bother you, treatment might not be needed.
Disease
Fibrocystic breasts
Learn about this condition that's common in women, including symptoms, possible causes and testing to determine when breast cysts might need treatment.
Disease
Fibromuscular dysplasia
Learn more about this condition that can narrow different arteries, including ones that supply blood to your kidneys, brain, heart or belly area.
Disease
Fibromyalgia
This condition affects the way the brain processes pain signals. It can cause widespread pain, fatigue and other symptoms. Learn what treatments can help.
Disease
Flatfeet
A common and usually painless condition, flatfeet occurs when the arches of the feet flatten upon standing, allowing the entire soles to touch the floor.
Disease
Floor of the mouth cancer
Learn about the symptoms of this type of cancer that forms under the tongue. Floor of the mouth cancer treatments include surgery, radiation and chemotherapy.
Disease
Focal segmental glomerulosclerosis (FSGS)
Learn about focal segmental glomerulosclerosis (FSGS), how it's diagnosed and treated.
Disease
Follicular lymphoma
Find out more about the symptoms, diagnosis and treatment of this type of non-Hodgkin lymphoma.