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Perimenopause
Perimenopause is a stage in a woman’s reproductive years that occurs just before menopause.
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Peripheral Arterial Disease and Claudication
Peripheral arterial disease (PAD) is a problem with blood flow in the arteries, especially those in the legs. Claudication is…
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Peritonsillar Abscess
A peritonsillar abscess is a collection of pus near one of your tonsils. It can be caused by an infection…
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Persistent Depressive Disorder (PDD)
Persistent depressive disorder is a mild or moderate depression that can last at least 2 years. It can be treated…
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Peyronie’s Disease
Peyronie’s disease is the buildup of fibrous scar tissue in the penis, causing it to curve.
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Phenylketonuria (PKU)
Phenylketonuria (PKU) is a rare genetic condition where babies are unable to break down an amino acid. This can lead…
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Pica
Pica is a compulsive eating disorder in which people eat nonfood items. Dirt, clay, and flaking paint are the most…
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Pigmented Villonodular Synovitis (PVNS)
Pigmented villonodular synovitis is a joint problem that usually affects the hip or knee. It also can occur in the…
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Pilonidal Cyst
A pilonidal cyst is a small, protuding sac located near the tailbone at the top of the buttocks crease.
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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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Piriformis Syndrome
Piriformis syndrome is a condition that causes pain or numbness in your buttocks, hip, or upper leg when the piriformis…
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Pituitary Tumors
The pituitary gland is located in your brain and produces hormones. Most pituitary tumors are non-cancerous.
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Pityriasis Rosea
Learn about the symptoms and causes of pityriasis rosea, and how it is diagnosed and treated.
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Plagiocephaly
Plagiocephaly is a condition where your baby’s head has a flat spot or is misshapen.
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Plantar Fasciitis
Plantar fasciitis is an inflammatory condition that causes pain and swelling in your heel.
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Pleurisy (Pleuritis)
Pleurisy is a medical condition that affects the lining of your lungs and chest, which can become irritated with the…
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Pneumonia
Pneumonia is an infection of the lungs. How serious it is depends on what caused the pneumonia, your age, and…
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Poison Ivy
Poison ivy is a type of toxic plant. It is common in most parts of the United States. Poison ivy…
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Poisoning
Poison is any substance that is harmful to your body. You could breathe it in, swallow it, or absorb it…
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Polycystic Kidney Disease
Polycystic kidney disease (PKD) is an inherited disease that affects the kidneys. It causes abnormal sacs of fluid (called cysts)…
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