Category: N
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Night pain
Pain that awakens the patient at night or interferes with sleep; may be due to infection, inflammation, neurovascular compromise, or severe structural damage.
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Necrotizing otitis externa
Infection of the base of the skull that originates in the external auditory canal. It is usually caused by infection with the bacterium Pseudomonas aeruginosa. The disease occurs most often in diabetic and other immunocompromised patients. It may be life-threatening and requires prolonged antibiotic therapy. Hyperbaric oxygen treatments are used in patients with the most…
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Neurotendinous end organ
A specialized tendon fasciculus in which sensory nerve fibers terminate in the tendon.
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Neuromuscular end organ
A spindle shaped bundle of specialized fibers in which sensory nerve fibers terminate in muscles.
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Nuclear ophthalmoplegia
Paralysis due to a lesion of the nuclei of the ocular motor nerves.
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Neuroparalytic ophthalmia
Ophthalmia resulting from injury or disease involving the semilunar ganglion or the branches of the trigeminal nerve supplying the affected eye.
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Nysten’s law
A law stating that rigor mortis begins with the muscles of mastication and progresses from the head down the body, affecting the legs and feet last.
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Nystagmograph
An apparatus for recording the oscillations of the eyeball in nystagmus.
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Nylon
A synthetic polymer that can be formed into fibers, lines, sutures,sheets, and fabrics. It is used in a variety of medical applications, including nonabsorbable sutures.
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Nyctamblyopia
Reduction or dimness of vision at night without visible eye changes.