Diseases and Conditions

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

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  • Labyrinthitis

    Labyrinthitis is a condition that affects a part of the inner ear called the labyrinth. When it is swollen, you…

  • illustration of a blood vessel carrying blood cells

    Idiopathic Thrombocytopenic Purpura (ITP)

    Idiopathic thrombocytopenic purpura (ITP) is a bleeding disorder. When you have ITP, your immune system destroys the platelets in your…

  • senior woman rubs her temples in pain

    Giant Cell Arteritis and Polymyalgia Rheumatica

    Giant cell arteritis (GCA) and polymyalgia rheumatica (PMR) is inflammation of the arteries in the arms, upper body, neck, hips,…

  • Two-faced woman, one happy and one sad, holding neutral mask in between

    Bipolar Disorder

    Bipolar disorder is a mental illness that causes extreme mood swings between happy and sad. People of all ages and…

  • female with hairy arm

    Hirsutism

    Hirsutism causes women to have excess hair on their face or body. It can have different causes, including genetics and…

  • Young woman wearing a mask to protect from getting H1N1 influenza

    H1N1 Influenza

    H1N1 influenza is a viral infection. It’s not the same as seasonal flu (influenza). The first outbreak occurred in 2009…

  • A lab technician holding a blood sample

    Hepatitis C

    Hepatitis C is a serious virus that causes inflammation of the liver. It is spread from person to person through…

  • doctor examining female patient for hypothyroidism while working in his office

    Hypothyroidism

    Hypothyroidism is an underactive thyroid. Your thyroid controls your metabolism, heart rate, muscles, bones, and other organs.

  • C. diff., or clostridium difficile, bacterium isolated on black background. A clostridium difficile (C. diff.) infection is a bacterial infection in your intestines. C. diff. infections can range from mild to severe.

    C. diff (Clostridium difficile) Infection

    A clostridium difficile (C. diff.) infection is a bacterial infection in your intestines.

  • man holding injured head in pain

    Concussion

    A concussion is a type of traumatic brain injury (TBI). It occurs when you hit your head, neck, or body…

  • Woman massaging fingers and hand to increase blood flow

    Raynaud's Disease

    Raynaud’s disease is a rare condition that narrows your blood vessels. It causes your fingers or toes to turn color…

  • Newborn baby girl crying and laying on bed in hospital

    Neonatal Abstinence Syndrome

    Neonatal abstinence syndrome (NAS) occurs when a baby is exposed to drugs in the womb. After birth, the baby goes…

  • Pyloric Stenosis

    What is pyloric stenosis? Pyloric stenosis is a medical condition. It is a narrowing of the opening between the stomach and the small intestine. That space is called the pylorus. It often occurs in babies younger than 6 months. It is more common in…

  • A gloved hand holds a magnifying glass up to a model of a hip joint. Transient synovitis of the hip, also called toxic synovitis, is an inflammation and swelling of the tissues around the hip joint.

    Toxic Synovitis, or Transient Synovitis of the Hip

    Learn about the symptoms, causes, diagnosis and treatment of transient synovitis of the hip, a condition that causes sudden hip…

  • Sleepwalking

    Learn about the causes of and ways to deal with sleepwalking.

  • A woman kneeling on the bathroom floor while holding her head over the toilet as she vomits

    Vomiting and Diarrhea

    Information for parents about vomiting and diarrhea in children from the American Academy of Family Physicians.

  • Sexually Transmitted Infections (STIs)

    Learn about sexually transmitted infections and how you can prevent them.

  • Sexual Dysfunction in Men and Women

    Learn about the symptoms, causes and treatment of sexual dysfunction disorders.

  • Man in an industrial factory, holding a respirator to prevent occupational respiratory disease

    Occupational Respiratory Disease

    Work can be a dangerous place if you are exposed to hazardous toxins. Certain substances put you at risk for…

  • Woman suffering from menstrual cramps holds her stomach while sitting on couch. Dysmenorrhea is the medical term for pain that women have before or during menses (known as their period). It usually is not serious.

    Dysmenorrhea

    What is dysmenorrhea? Dysmenorrhea is the medical term for pain that women have before or during menses (known as their period). It usually is not serious. Symptoms of dysmenorrhea Menstrual cramps can feel like a dull ache or a shooting pain. They most often…