头皮裂伤多由锐器或钝器致伤。裂口大小，深度不一，创缘整齐或不整齐，有时伴有皮肤挫伤或缺损，由于头皮血管丰富，血管破裂后不易自行闭合，即使伤口小出血也较严重，甚至因此发生休克。
头部外伤、中枢神经系统感染和肿瘤与继发性癫痫有关。
Head trauma, central nervous system infections and tumors are associated with secondary epilepsy.
现在更常用的术语有虐待性头部外伤或人为创伤性脑损伤。
Terms more commonly used include abusive head trauma or inflicted traumatic brain injury.
这虽然还不到一次头部外伤的程度，不过也很值得注意了。
This was not to the extent that would happen after a head injury, for instance, but it was still significant.
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