Diseases and Conditions

Find doctor-approved information about symptoms, causes, diagnosis, treatment and prevention of common diseases and conditions.

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All conditions that start with the letter F
  • Fainting

    Fainting happens when your brain does not get enough oxygen. You lose consciousness, or “pass out,” for a few seconds…

  • Febrile Seizures

    Febrile seizures are seizures (convulsions) in young children caused by a fever above 102°F (38.9°C).

  • Fecal Incontinence

    Fecal incontinence is the inability to control bowel movements. This leads to stool (feces) leaking from the rectum at unexpected…

  • Female Athlete Triad

    The female athlete triad is a disorder that can affect women’s eating habits, menstrual cycles, and bone mass.

  • Fetal Alcohol Syndrome

    Fetal alcohol syndrome is a group of medical problems that can happen in a baby when the mother drinks alcohol…

  • Fever in Infants and Children

    A baby or infant's first fever can be scary. Learn how to take your child’s temperature, how to bring down…

  • Fibromyalgia

    Fibromyalgia is a syndrome that causes muscle pain and general fatigue. It is most often diagnosed during middle age.

  • Fifth Disease

    Fifth disease is a mild viral infection common in children. It usually causes a bright red rash on the face…

  • Flat Feet

    Flat feet is a condition in which one or both feet don’t have normal arches. You may be born with…

  • Food Allergies

    A food allergy is an abnormal reaction to a food triggered by your immune system.

  • Food Poisoning

    Food poisoning (also known as food-borne illness) occurs when you eat or drink something that contains harmful germs.

  • Fragile X Syndrome

    What is Fragile X syndrome? Fragile X syndrome is a genetic disorder. It is most often passed on from a parent to a child at the time the child is conceived. The disorder causes intellectual and developmental disabilities. This means it affects a person


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