Algesia (pain) is an ill-defined, unpleasant sensation, usually evoked by an external or internal noxious stimulus.
ALGESIA AND ANALGESICS
Algesia (pain) is an ill-defined, unpleasant
sensation, usually evoked by an external or internal noxious stimulus.
Analgesic A drug that selectively relieves pain by acting in the CNS or on peripheral pain
mechanisms, without significantly altering consciousness.
Pain is a warning
signal, primarily protective in nature, but causes discomfort and suffering;
may even be unbearable and incapacitating. It is the most important symptom
that brings the patient to the physician. Excessive pain may produce other
effects—sinking sensation, apprehension, sweating, nausea, palpitation, rise or
fall in BP, tachypnoea. Analgesics relieve pain as a symptom, without affecting
its cause. They are used when the noxious stimulus (evoking the pain) cannot be
removed or as adjuvants to more etiological approach to pain. Analgesics are
divided into two groups, viz.
Opioid/Narcotic/Morphine-like
Analgesics.
Nonopioid/Nonnarcotic/Aspirin-like/Antipyretic
Or Anti-Inflammatory Analgesics.
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