Diseases and Conditions

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

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  • A photo of a baby who has on a cast on his leg

    Clubfoot

    Clubfoot is a condition present at birth that causes a baby’s foot to turn inward or downward. It can be…

  • Close-up of a mosquito on human skin. West Nile virus is an infectious disease that can cause flu-like symptoms. It’s usually spread by infected mosquitos.

    West Nile Virus

    West Nile virus is an infectious disease that can cause flu-like symptoms. It’s usually spread by infected mosquitos.

  • woman holding stomach in pain

    Vulvodynia

    Vulvodynia is pain and discomfort in a woman’s external genital area known as the vulva.

  • A young businessman having a panic attack in an office. Panic disorder is a condition in which a person has sudden episodes of intense fear or anxiety. These episodes are known as panic attacks.

    Panic Disorder and Panic Attacks

    Panic disorder is a condition in which a person has episodes of intense fear or anxiety that occur suddenly, often…

  • Osteochondritis Dissecans

    Osteochondritis dissecans is a joint problem. It occurs when an area of bone under a piece of cartilage in the…

  • Doctor examines knee of teenage boy seated on examination bed. Osgood-Schlatter disease causes swelling and knee pain. It can be caused by pulled or overused muscles around one or both knees.

    Osgood-Schlatter Disease

    Osgood-Schlatter disease is one of the most common causes of knee pain in young children and athletes. It can affect…

  • A female holds her hands behind her back. Hemorrhoids are swollen or inflamed veins in your rectum or around your anus. They are very common, especially in people who are pregnant.

    Hemorrhoids

    Hemorrhoids are swollen or inflamed veins in your rectum or around your anus. They are very common, especially in people…

  • A little girl lies in bed with a thermometer in her mouth. Fifth disease is a mild viral infection that causes a bright red rash on the face. Other symptoms include fever, sore throat and headache.

    Fifth Disease

    Fifth disease is a mild viral infection that causes a bright red rash on the face. It also has cold-like…

  • Fibromyalgia is a syndrome that causes muscle pain and general fatigue. It is a condition that is often misunderstood.

    Fibromyalgia

    Fibromyalgia is a syndrome that causes muscle pain and general fatigue.

  • Pituitary gland part human

    Cushing's Syndrome

    Cushing’s syndrome is a disease that occurs when your body makes too much of the hormone cortisol.

  • Congenital Adrenal Hyperplasia

    Congenital adrenal hyperplasia (CAH) is a rare genetic disorder that affects your adrenal glands.

  • Chlamydia

    Chlamydia

    Chlamydia (Chlamydia trachomatis) is a sexually transmitted infection (STI) that often has no symptoms.

  • A doctor using a otoscope to look inside a young girls ear canal

    Repeated Infections in Children

    Learn why your child may get several infections while he or she is still young.

  • close-up of older couple jogging in a park

    Prediabetes

    Prediabetes is when your blood sugar levels are higher than normal, but not high enough to be called diabetes.

  • Chronic Cough

    A chronic cough is one that lasts for 8 weeks or more.

  • Man suffering from neck pain and stiffness holds neck

    Cervical Spondylotic Myelopathy (CSM)

    Cervical spondylotic myelopathy (CSM) is a compression of the spinal cord in your neck.

  • Preschool boy plays on a tire swing, leaning back as far as he can. Sensory processing disorder (SPD) is a condition that affects how your brain processes sensory information (stimuli).

    Sensory Processing Disorder (SPD)

    Sensory processing disorder (SPD) is a condition that affects how your brain processes sensory information (stimuli).

  • Teeth grinding is also known as bruxism. About 20% or 30% of children clench their teeth but usually stop as they get older.

    Teeth Grinding (Bruxism)

    Teeth grinding is also known as bruxism. About 20% or 30% of children clench their teeth but usually stop as…

  • A woman grimaces while putting her fingers in her ears. Tinnitus causes you to hear an “internal” noise in one ear or both ears. You may hear the noise constantly, or it may come and go.

    Tinnitus

    Tinnitus is a problem that causes you to hear an “internal” noise in one ear or both ears. You may…

  • Woman touching her throat because it is sore

    Sore Throat

    A sore throat can feel irritated or scratchy with mild to burning pain. Most sore throats are caused by viruses,…