Diseases and Conditions

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

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  • Girl walking over balancing pods during physical therapy for flat feet

    Flat Feet

    Flat feet is a common condition in which one or both feet don’t have normal arches. This condition can happen…

  • A man has fainted outdoors

    Fainting

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

  • E. coli Infection

    E. coli are germs that are found on food and in the environment. When ingested, E. coli cause severe cramps…

  • Bedbugs

    Bedbugs are oval-shaped, wingless parasites. They have 6 legs and are about 1/5 of an inch long. They are white…

  • A doctor holds a bag of blood while talking to patient getting a blood transfusion because of anemia symptoms.

    Anemia

    Anemia is the most common blood disorder in the U.S. It affects your red blood cells and hemoglobin. Most people…

  • Yeast Infections

    Vaginal yeast infections are caused by a fungus called Candida. If the vagina isn’t acidic enough, too many yeast can…

  • A man coughs into his hand. Whooping cough is a respiratory infection. It is also known as pertussis. Whooping cough is highly contagious and is most harmful to babies.

    Whooping Cough

    Whooping cough is a respiratory infection. It is also known as pertussis. Whooping cough is highly contagious and is most…

  • Table for eyesight test and glasses over it. Vision loss is losing your ability to see well without vision correction tools, such as eyeglasses or contact lenses.

    Vision Loss

    Vision loss is losing your ability to see well without vision correction tools, such as eyeglasses or contact lenses. It…

  • A mother with postpartum preeclampsia holding a newborn baby in her arms at the hospital

    Postpartum Preeclampsia

    Postpartum preeclampsia is high blood pressure in a woman who has recently had a baby. It is a rare medical…

  • Cotton swab with fluid sample for lab test to diagnose meningitis

    Meningitis

    Meningitis is swelling of the tissue around your brain and spinal cord. There are two common types of meningitis: viral…

  • newborn baby wrapped up in a blanket sleeping

    Undescended Testicles

    Testicles are part of the male body. They usually move from inside the body to the scrotum at birth. If…

  • Thyroid Nodules

    A thyroid nodule is a lump in the thyroid gland in your neck. More than 90% of them are not…

  • Stomach Cancer

    Stomach cancer is the growth of cancer cells in the lining and wall of the stomach. It’s also called gastric…

  • A shingles rash on a man’s back

    Shingles

    Shingles is a painful skin rash. It is also called zoster or herpes zoster. It is caused by the same…

  • Reactive Arthritis

    Reactive arthritis occurs when your immune system reacts to an infection somewhere else in your body. It can affect your…

  • Polycythemia Vera

    Polycythemia vera (PV) occurs when your body makes too many red blood cells. This can cause blood clots and lead…

  • ACL Injury

    An ACL injury is the overstretching or tearing of the anterior cruciate ligament in your knee. It is a common…

  • Sudden Infant Death Syndrome (SIDS)

    Sudden infant death syndrome is the unexplained reason a baby under 1 year old dies while sleeping. There are no…

  • Tick-Borne Relapsing Fever

    Tick-borne relapsing fever (TBRF) is a bacterial infection spread by ticks. It shows up as repeated episodes of fever, headaches,…

  • A couple holds hands while talking to a doctor holding a clipboard. Syphilis is a serious infection spread through sexual contact. It's important to seek treatment early if you notice syphilis symptoms.

    Syphilis

    Syphilis is a serious infection passed from one person to another through sexual contact. It is caused by a bacteria…