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 With the exception of migraine headaches, which
are a different type of headache, headaches are simply painful
symptoms of an underlying systemic problem or cause.
No specific cause can be fingered as the culprit
responsible for the end result of a painful headache.
A multitude of causes exist for a headache, each of which has a
different trigger mechanism, but the resulting headache in all cases
is a red flag signaling a disorder somewhere in the body or in the
nervous system.
In most cases, the anatomy of a headache can be dissected and
understood, once it is traced back to its physical or neurological
origin. The actual pain we experience does not stem from the
actual brain matter contained in the skull, but from the pain felt
by the sensitive coverings of the brain, and of the large veins and
arteries which drain fluid from the brain. Sinus, tooth, ear,
and muscle pain produce headaches by radiating the pain to these
sensitive coverings when they tense, and when the muscles spanning
the neck and the base of the skull contract.
Complaints of headaches commonly fall under the heading of
vascular headaches, and result when the arteries in the skull
dilate, often because of triggers that include hunger,
caffeine deprivation, and hangovers. Other cases simple to
diagnose include cases where people experience the effects of sudden
physical and emotional trauma from an automobile accident. The
violent jolts their bodies sustain, or the effects of their necks
twisting, often result in headaches, because the trauma from pulled
or tensed muscles triggers pain in the sensitive brain
structures.
Further, severe emotional trauma causes muscles over the back and
at the lower part of the head and the neck to contract, resulting in
an instantaneous headache.
The important thing to remember, when one experiences a headache,
is that it is a symptom of underlying disorders, with multiple
causes, that should command respect, and that merit
diagnosis.
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note:
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migraine: 偏頭痛
underlying: 潛在的
finger: 指出，這里是指責(zé)
culprit: 罪人，元兇
stem from: 起源于
Sinus: 穴
contract: 收縮
dilate: 膨脹
hangover: 宿醉
instantaneous: 瞬間的
respect:
重視 | |
