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Diseases and Conditions

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

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  • 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,…

  • A man who doesn't feel well is sitting on top of his bed with his head in his hand

    Somatic Symptom Disorder

    Somatic symptom and related disorders represents the physical pain and symptoms a person feels from psychological factors.

  • Doctor measures the blood pressure of a pregnant woman

    Preeclampsia

    Preeclampsia is a condition women can get while pregnant. It involves an increase in blood pressure and signs of damage…

  • Close up of rheumatism / arthritis medical examination

    Rheumatoid Arthritis

    Rheumatoid arthritis (RA) is a chronic (lasting) inflammatory disorder. It causes swelling and pain in the lining of your…

  • An illustration of a typical ovary

    Polycystic Ovary Syndrome

    olycystic ovary syndrome (PCOS) is a condition that occurs when cysts form on a woman’s ovaries.

  • Swimmer’s ear, also known as otitis externa, is an irritation, swelling or infection in your ear. It can be caused by bacteria and fungus.

    Otitis Externa (Swimmer's Ear)

    Swimmer’s ear, also known as otitis externa, is an irritation, swelling or infection in your ear. It can be caused…

  • Piriformis Syndrome

    Piriformis syndrome is a condition that causes pain or numbness in your buttocks, hip, or upper leg when the piriformis…

  • Osteopenia

    Osteopenia is a condition that begins as you lose bone mass and your bones get weaker.

  • Non-substance Addiction

    A non-substance addiction includes things like gambling, sex, food, the internet, mobile devices, and shopping. It is also known as…

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