It has been reported that nitric oxide (NO) acts as a neurotransmitter in the vasodilator nerves innervating the cerebral arteries in several mammals. 1, 2 Histochemistry has showed that nitric oxide ...
3.1 It is believed that cluster headaches are caused by a trigeminal‑autonomic reflex mediated through the sphenopalatine ganglion. This procedure aims to relieve pain and reduce the frequency of ...
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