脑动脉瘤(或脑动脉瘤)是脑动脉壁上的一个薄弱区域，肿胀并充满血液. 这个鼓胀的口袋或囊会对大脑的其他部分施加压力, which may or may not cause symptoms. 在某些情况下，脆弱的血管会破裂(破裂或出血), spreading blood into the surrounding tissue (called a hemorrhage).
Not all brain aneurysms burst or cause symptoms. 在美国，大约有600万人(大约每50人中就有1人)患有未破裂的脑动脉瘤. 然而, 近三分之一的脑动脉瘤破裂患者将因此而死亡, and more than half who survive will have some permanent disability.
颈部疼痛是很常见的. There are many complex and important structures in the neck, including the top seven bones in the spine (vertebrae), the disks between the vertebrae, 血管, 脊髓神经, 肌肉和韧带. Problems with any one of these can result in neck pain. 如果颈部疼痛是慢性的, and doesn't improve with neck exercises or ergonomics, your options might include injections or radiofrequency treatments.