Thunderclap headache (sudden and severe headache, maximum in intensity at onset) should raise concern for several life-threatening conditions, including subarachnoid hemorrhage (SAH).

• 雷鸣性头痛（突然而剧烈的头痛，发作时疼痛程度最强）可能涉及若干危急生命的情况，包括蛛网膜下出血（SAH）在内。