Diseases and Conditions

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

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All conditions that start with the letter P
  • Pancreatitis

    Pancreatitis is inflammation or swelling of your pancreas. It can be acute or chronic. Both forms are serious conditions.

  • Panic Disorder

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

  • Paraphimosis

    Paraphimosis is when an uncircumcised boy or man’s foreskin gets stuck behind the head of the penis, causing swelling and…

  • Parkinson’s Disease

    Parkinson’s disease is a chronic and progressive disorder that causes problems with muscle movement.

  • Paronychia

    Paronychia is a skin infection around the fingernails or toenails. It usually isn’t serious and can be treated at…

  • Patellofemoral Pain Syndrome

    Learn about the cause and treatment of patellofemoral pain syndrome, a condition that causes knee pain.

  • Pelvic Floor Disorders

    A group of muscles and connective tissues make up your “pelvic floor.” It can weaken, causing bladder- or bowel-control problems,…

  • Pelvic Inflammatory Disease

    Pelvic inflammatory disease is an infection of the female reproductive organs. It is often caused by a sexually transmitted infection…

  • Peptic Ulcer Disease

    Peptic ulcer disease is a condition where there’s a raw area in the lining of the stomach or upper part…

  • Perimenopause

    Perimenopause is a stage in a woman’s reproductive years that means she is nearing menopause.

  • Peripheral Arterial Disease and Claudication

    Learn about the causes, diagnosis and treatment of peripheral arterial disease (PAD) and claudication, a problem with blood flow in…

  • Peritonsillar Abscess

    Learn about the symptoms of and treatments for peritonsillar abscess.

  • Persistent Depressive Disorder (PDD)

    Learn about the symptoms, causes and treatment of dysthymic disorder, a type of depression that lasts for at least 2…

  • Peyronie’s Disease

    Learn about Peyronie’s disease and how it is treated.

  • Phenylketonuria (PKU)

    Phenylketonuria (PKU) is a rare condition where babies are born with the inability to process an essential amino acid called…

  • Pica

    Pica is a compulsive eating disorder of eating nonfood items that affects children and pregnant women.

  • Pigmented Villonodular Synovitis

    Learn about the symptoms, diagnosis and treatment of pigmented villonodular synovitis (PVNS), a condition that can cause joint pain and…

  • Pilonidal Cyst

    Learn about the symptoms and causes of pilonidal cyst, and how your doctor will diagnose and treat it.

  • Pinworm Infection

    Learn how to recognize and prevent pinworm infection, and how it is treated.

  • Piriformis Syndrome

    Learn about the symptoms, causes, diagnosis, treatment and prevention of piriformis syndrome, a condition that occurs when your sciatic nerve…

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