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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «P»:

  1. Parkinson disease gene Parkinson disease gene
    Parkinson disease gene: A gene involved in the causation of Parkinson disease. There are a number of different autosomal dominant and recessive forms of Parkinson disease. They are called PARK1, PARK2, and so on: PARK1 is an autosomal dominant trait and is due to mutation in the alpha-synuclein ge...
  2. Parkinson disease genetics Parkinson disease genetics
    Parkinson disease genetics: See: Parkinson disease gene....
  3. Parkinson's disease Parkinson's disease
    Parkinson's disease: See: Parkinson disease....
  4. Parkinson, James Parkinson, James
    Parkinson, James: (1755-1824) English physician and paleontologist who gave a classic account in 1817 of a chronic, slowly progressive disease of the nervous system characterized by a combination of tremor, rigidity, and stooped posture. Parkinson called it the shaking palsy. It is now known as Par...
  5. Parkinsonism Parkinsonism
    Parkinsonism: 1. Parkinson disease. 2. A syndrome similar to Parkinson disease, for example, as a side effect of an antipsychotic drug....
  6. Paronychia Paronychia
    Paronychia: Inflammation of the folds of tissue surrounding the nail due to infection. The infection may be bacterial (most commonly, staph or strep) or to fungal. The term "paronychia" is compounded from "para-", next to + the Greek "onyx", nail = next to the nail. Paronychia is synonymous with pe...
  7. Parotid gland Parotid gland
    Parotid gland: The largest of the three major salivary glands, it is located in front and below the ear and behind the jaw bone. The other two glands are the submandibular (submaxillary) and sublingual. ...
  8. Parotids Parotids
    Parotids: Salivary glands situated in front of the ears. ...
  9. Parotitis Parotitis
    Parotitis: Inflammation of the parotid glands. A classic feature of mumps. ...
  10. Paroxysm Paroxysm
    Paroxysm: In medicine, a paroxysm is a violent attack. It may be due to the sudden occurrence of symptoms or the acute exacerbation (the abrupt worsening) of preexisting symptoms. You may have "a paroxysm of coughing" as opposed, for example, to "a lingering cough." The word "paroxysm" comes from...
  11. Paroxysmal atrial tachycardia Paroxysmal atrial tachycardia
    Paroxysmal atrial tachycardia: Abbreviated PAT. Bouts of rapid, regular heart beating that originate in the upper chamber (atrium) of the heart due to abnormalities in the atrioventricular (AV) node that lead to rapid firing of electrical impulses from the atrium that bypass the AV node. PAT tends t...
  12. Paroxysmal lacrimation Paroxysmal lacrimation
    Paroxysmal lacrimation: See: Crocodile tears syndrome....
  13. Paroxysmal sleep Paroxysmal sleep
    Paroxysmal sleep: A neurological disorder marked by a sudden recurrent uncontrollable compulsion to sleep. Also known as narcolepsy. The disorder is often associated with cataplexy (a sudden loss of muscle tone and paralysis of voluntary muscles associated with a strong emotion), sleep paralysis (...
  14. Parrot fever (psittacosis) Parrot fever (psittacosis)
    Parrot fever (psittacosis): An infectious disease due to a bacteria (Chlamydia psittaci) contracted from psittacine birds, especially caged birds like parrots, parakeets, and lovebirds and also in turkey processing plants. The bacteria enter the human body by inhalation of air that contains it...
  15. Parry's disease Parry's disease
    Parry's disease: Toxic multinodular goiter. Named for the English physician Caleb Hillier Parry (1755-1822). also called Plummer's disease....