Question

Paroxysms of pain can occur singly or in clusters which tend to recur frequently both during the day and night.

Answer 1

Answer:

Intracranial disease can produce pain in only a limited number of ways. ... This occurs because pain from many sources converge on single "wide dynamic range" pain transmission ...

Answer 2

Explanation:

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The pain seldom lasts more than a few seconds or a minute or two but may be so intense that the patient winces, hence the term tic. The paroxysms, experienced as single jabs or clusters, tend to recur frequently, both day and night, for several weeks at a time...

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