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

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

  • close-up of an elderly man’s hands on top of a cane with a caregiver’s hand on top

    Parkinson’s Disease

    Parkinson’s disease is a movement disorder that affects the nervous system and causes tremors, slowed movements and stiff muscles.

  • child’s hand with red and swollen skin around fingernail caused by a skin infection

    Paronychia

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

  • Patellofemoral Pain Syndrome

    Patellofemoral pain is a knee condition. It’s most common in people who participate in high-impact activities that include jumping and…

  • Pelvic Floor Disorders

    Pelvic floor disorders happen when the muscles in your pelvic floor weaken. It can cause constipation, painful urination and organ…

  • close up of a woman holding her abdomen in discomfort

    Pelvic Inflammatory Disease

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

  • 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…

  • Active woman in her 50s running and jogging.

    Perimenopause

    Perimenopause is a stage in a woman’s reproductive years that occurs just before menopause.

  • 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…

  • Peritonsillar Abscess

    A peritonsillar abscess is a collection of pus near one of your tonsils. It can be caused by an infection…

  • sad-looking young woman looks down over a mug of hot beverage

    Persistent Depressive Disorder (PDD)

    Persistent depressive disorder is a mild or moderate depression that can last at least 2 years. It can be treated…

  • Peyronie’s Disease

    Peyronie’s disease is the buildup of scar tissue in the penis, causing it to curve. This may be painful or…

  • Phenylketonuria (PKU)

    Phenylketonuria (PKU) is a rare genetic condition where babies are unable to break down an amino acid. This can lead…

  • Pica

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

  • Pigmented Villonodular Synovitis

    Pigmented villonodular synovitis is a joint problem that usually affects the hip or knee. It also can occur in the…

  • Pilonidal Cyst

    A pilonidal cyst is a small, protuding sac located near the tailbone at the top of the buttocks crease.

  • Pinworm Infection

    Pinworm infection is an intestinal infection caused by small, white worms. Anyone can get it, but it’s most common in…

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