Medical Glossary

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P

palliative
Something that helps manage symptoms of, but does not cure, a disease
paresthesias
Unusual sensory symptoms of tingling, numbness, or other abnormal feelings of sensation
Parkinson's disease
Condition in which cells that produce dopamine degenerate, causing tremor, muscle stiffness, and loss of motor function
pathology
Field concerned with examination of tissues removed for the purposes of diagnosing disease and guiding patient care
PCP (primary care physician)
Large subset of physicians who do not provide specialized care, including internists, pediatricians, and general practitioners
peripheral nerves
Nerves outside the brain and spinal cord
peripheral nervous system
Peripheral nerves and muscular structures
photophobia
Visual aversion to light, as experienced with migraine headache
plain film
Basic x-ray with no contrast agents
platelets
Coagulating blood cells
polysomnography
Sleep study, in which numerous physiological monitors are attached to the patient to record nighttime breathing, brain activity, and physical activity
positive airway pressure
Technique for treating obstructive sleep apnea in which forced air, fed through a mask, is pumped into the nose and mouth, and which keeps the airway open during sleep
prophylactic
Medications or treatments that are preventative in the treatment of disease
ptosis
Drooping of the eyelids due to weakness of the muscles that normally keep the lids open

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R

radiculopathy
Irritation and inflammation of one of the nerve roots in the vicinity of the spinal column
REM (rapid eye-movement sleep)
Stage of sleep that is characterized by significantly decreased muscle tone, rapid eye movements, and dreaming; stage 5 sleep
restless legs syndrome
Common neurological disorder that causes pulling, tearing, and jerking sensations in the legs when a person is at rest
rheumatoid arthritis
Chronic inflammatory disease that causes the body's immune system to attack the joints
rigidity
Stiffness in the limbs or body due to dysfunction of the basal ganglia and related structures
rods
Photoreceptor cells in the retina that are primarily responsible for peripheral vision and vision in dim light

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