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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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  • 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…

  • Young Woman with Perfect Skin and Skin Problem. Unhealthy and Healthy Skin After Treatment.

    Rosacea

    Rosacea is a common skin condition that occurs on the face. It causes redness and small bumps that are similar…

  • Pulmonary Hypertension

    Pulmonary hypertension is an increase in pressure in the blood vessels that carry blood to the lungs. It is a…

  • 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…

  • Pica

    Pica is a compulsive eating disorder in which people eat nonfood items. Dirt, clay, and flaking paint are the most…

  • Peripheral Arterial Disease and Claudication

    Peripheral arterial disease is a blood flow problem in the arteries, especially the legs. Claudication is pain in the leg…

  • Ovarian Cancer

    Ovarian cancer is cancer in one or both ovaries. Ovaries are small organs located on each side of a women’s…

  • 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…

  • Pancreatitis

    Pancreatitis is inflammation (swelling) of your pancreas. The pancreas is a gland near your stomach and liver. It makes digestive…

  • older woman sits on bed with her hand on her hip in pain

    Osteoarthritis

    Arthritis is swelling of the joints. It’s painful and can limit your movement. There are many kinds of arthritis. Osteoarthritis…

  • Nail Fungal Infections

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

  • Little girl sitting in mother’s lap at doctor’s office

    Munchausen Syndrome by Proxy

    Munchausen syndrome by proxy (MSP) is a mental illness. It is also a form of child abuse. It affects caregivers,…

  • Doctor treating a senior woman who has possible bone fractures

    Multiple Myeloma

    Multiple myeloma is a kind of cancer in the bone marrow. It is caused when your body makes too many…

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