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
  • Pancreatic Cancer

    What is pancreatic cancer? Pancreatic cancer is a type of cancer. It affects your pancreas. Your pancreas is an organ. It is located behind your stomach and in front of your spine. Your pancreas produces juices that break down food and control blood sugar

  • 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 kind of movement disorder. It affects the nervous system and 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

    When your pelvic floor weakens, it can cause problems. You may have bladder- or bowel-control problems (incontinence).

  • Pelvic Inflammatory Disease

    Pelvic inflammatory disease is an infection of female reproductive organs. It can make it hard to get pregnant and cause…

  • 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

    A peritonsillar abscess is a puss-filled sore near the back of your throat and tonsils. It is filled with…

  • Persistent Depressive Disorder (PDD)

    Persistent depressive disorder is a chronic depression that lasts at least 2 years.

  • 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

    A pilonidal cyst is a small sac that sticks up from inside the skin. It’s usually located near the tailbone…

  • Pinworm Infection

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