Diseases and Conditions

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

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  • 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…

  • Couple meeting with doctor

    Infertility

    Infertility means a couple isn’t able to become pregnant after 1 year of having regular, unprotected sex. Infertility can affect…

  • 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…

  • Stuttering

    Stuttering is a condition that affects a person’s ability to speak smoothly. It can cause them to repeat words, parts…

  • 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…

  • closeup of a sty on a child’s eye

    Sty

    A sty is a painful, red bump that forms on the edge of your eyelid. It may look like an…

  • Spina Bifida

    Spina bifida is a birth defect that happens when a baby’s spine and spinal cord don’t close completely during…

  • Sever's Disease

    Sever’s disease is a common heel injury that occurs in children. It is painful and caused by swelling of the…

  • Pediatrician examining little girl with back problems.

    Scoliosis

    Scoliosis is an abnormal curve of the spine (backbone). Normally, the spine is straight. With scoliosis, the spine is crooked…

  • Pseudogout

    Pseudogout is a type of arthritis that causes painful swelling in one or more of your joints. It can lead…

  • Man holding his stomach in pain

    Peptic Ulcer Disease

    A peptic ulcer is a raw area in the stomach or near the top of the small intestine. The lining…

  • Lung Symptoms

    Pleurisy (Pleuritis)

    Pleurisy is a medical condition that affects the lining of your lungs and chest, which can become irritated with the…

  • Paraphimosis is a serious condition where the foreskin gets stuck behind the head of the penis and can’t be pulled back into normal position.

    Paraphimosis

    Paraphimosis is a serious condition that happens when the foreskin gets stuck behind the head of the penis and can’t…

  • Nail Fungal Infections

    A nail infection is caused by a fungus. This infection can happen in toenails and fingernails. It is more common…