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Diseases & conditions A-Z List

Diseases & Conditions A-Z List - «P»:

  1. Parathyroid biopsy Parathyroid biopsy
    A parathyroid biopsy is a procedure to remove a small piece of a parathyroid gland. The parathyroid glands are the four glands behind the thyroid in the neck. How the Test is Performed A parathyroid biopsy is done while the patient is awake. Using an ultrasound machine, the health care provider loc...
  2. Parathyroid cancer Parathyroid cancer
    Parathyroid cancer is a cancerous (malignant) growth in a parathyroid gland. Causes The parathyroid glands are responsible for managing the calcium levels in the body. There are four parathyroid glands, two on top of each lobe of the thyroid gland. They are located at the base of the neck. Parathyr...
  3. Parathyroid gland removal Parathyroid gland removal
    Parathyroidectomy is surgery to remove parathyroid glands or parathyroid tumors. The parathyroid glands are right behind your thyroid gland in your neck. These glands help your body use calcium. Description You will probably receive general anesthesia (asleep and pain-free) for this surgery. Or yo...
  4. Parathyroid hyperplasia Parathyroid hyperplasia
    Parathyroid hyperplasia is the enlargement of all four parathyroid glands. The parathyroid glands are four glands in the neck that produce parathyroid hormone (PTH). Causes Parathyroid hyperplasia may occur sporadically (in persons without a family history of the disease) or as part of three inheri...
  5. Parinaud oculoglandular syndrome Parinaud oculoglandular syndrome
    Parinaud oculoglandular syndrome is an eye problem similar to conjunctivitis ("pink eye"). It usually affects only one eye and is accompanied by nearby swollen lymph nodes and an illness with a fever. Causes Parinaud oculoglandular syndrome (POS) is caused by an infection by bacteria, virus, fungus...
  6. Parkinson’s disease Parkinson’s disease
    Parkinson's disease is a disorder of the brain that leads to shaking (tremors) and difficulty with walking, movement, and coordination. Causes Parkinson's disease was first described in England in 1817 by Dr. James Parkinson. The disease most often develops after age 50. It is one of the most commo...
  7. Parkinson’s disease - resources Parkinson’s disease - resources
    The following organizations are good resources for information on Parkinson's disease: National Parkinson Foundation - www.parkinson.org Michael J. Fox Foundation for Parkinson's Research - www.michaeljfox.com Parkinson's Disease Foundation, Inc. - www.pdf.org Alternative Names Resources - Par...
  8. Paronychia Paronychia
    Paronychia is a skin infection that occurs around the nails. Causes Paronychia is fairly common. It is usually caused by injury to the area -- for example, from biting off or picking a hangnail or from trimming or pushing back the cuticle. Bacterial paronychia is caused by bacteria. Candidal paron...
  9. Paroxysmal cold hemoglobinuria (PCH) Paroxysmal cold hemoglobinuria (PCH)
    Paroxysmal cold hemoglobinuria (PCH) is a rare blood disorder in which the body's immune system produced antibodies that destroy red blood cells when they go from cold to warm temperatures. Causes Paroxysmal cold hemoglobinuria only occurs in the cold, and affects mainly the hands and feet. Antibod...
  10. Paroxysmal nocturnal hemoglobinuria (PNH) Paroxysmal nocturnal hemoglobinuria (PNH)
    Paroxysmal nocturnal hemoglobinuria is a rare disease in which red blood cells break down earlier than normal. Causes Persons with this disease have blood cells that are missing a gene called PIG-A. This gene allows a substance called glycosyl-phosphatidylinositol (GPI) to help certain proteins sti...
  11. Paroxysmal supraventricular tachycardia (PSVT) Paroxysmal supraventricular tachycardia (PSVT)
    Paroxysmal supraventricular tachycardia (PSVT) is an occasional rapid heart rate. "Paroxysmal" means from time to time. Causes Normally, the chambers of the heart (atria and ventricles) contract in a coordinated manner. The contractions are caused by an electrical signal that begins in an area of ...
  12. Partial (focal) seizure Partial (focal) seizure
    All seizures are caused by abnormal electrical disturbances in the brain. Partial (focal) seizures occur when this electrical activity remains in a limited area of the brain. The seizures may sometimes turn into generalized seizures, which affect the whole brain. This is called secondary generalizat...
  13. Partial thromboplastin time (PTT) Partial thromboplastin time (PTT)
    Partial thromboplastin time (PTT) is a blood test that looks at how long it takes for blood to clot. It can help tell if you have bleeding or clotting problems. How the Test is Performed The health care provider uses a needle to take blood from one of your veins. The blood collects into an air-tigh...
  14. Passive-aggressive personality disorder Passive-aggressive personality disorder
    Passive-aggressive personality disorder is a long-term (chronic) condition in which a person seems to actively comply with the desires and needs of others, but actually passively resists them. In the process, the person becomes increasingly hostile and angry. Psychiatrists no longer recognize this c...
  15. Patches Patches
    A patch is a flat area of color change in the skin that is greater than 10 millimeters wide....