Abstract：
BACKGROUND: Dropped head syndrome (DHS) is characterized by a chin-on-chest deformity, correctable by passive neck extension.
METHODS: Case report.
RESULTS: A patient with a heavy nephrological history (dialyzed since 5 years) complained for twenty months about a falling head. The symptomatology was punctuated by dialysis sessions, with aggravation secondary to dialysis. Clinical and paraclinical exploration for neurological, neuromuscular or orthopedic disease was negative. Analysis of the post-dialysis blood pressure showed a slow and gradual decline. From the date the patient became symptomatic, blood pressure was below 80/40mmHg. The correction of blood pressure by increasing midodrine posology resulted in a cure of DHS.
CONCLUSIONS: Considering the negativity of explorations, the cure of symptoms following the correction of arterial hypotension, the rhythmic nature of symptomatology by dialysis, and the recurrence of symptoms concomitantly with drops in blood pressure, we suggested that hypotension was the only etiology explaining this DHS.
METHODS: Case report.
RESULTS: A patient with a heavy nephrological history (dialyzed since 5 years) complained for twenty months about a falling head. The symptomatology was punctuated by dialysis sessions, with aggravation secondary to dialysis. Clinical and paraclinical exploration for neurological, neuromuscular or orthopedic disease was negative. Analysis of the post-dialysis blood pressure showed a slow and gradual decline. From the date the patient became symptomatic, blood pressure was below 80/40mmHg. The correction of blood pressure by increasing midodrine posology resulted in a cure of DHS.
CONCLUSIONS: Considering the negativity of explorations, the cure of symptoms following the correction of arterial hypotension, the rhythmic nature of symptomatology by dialysis, and the recurrence of symptoms concomitantly with drops in blood pressure, we suggested that hypotension was the only etiology explaining this DHS.
摘要：
背景：头部下垂综合征（DHS）的特征是下巴对胸部畸形，通过被动颈部延伸可校正。
方法：病例报告。
结果：一名有严重肾脏病史（5年后透析）的患者主诉了20个月的头部坠落。症状被透析治疗打断，透析后加重。神经学临床和临床旁探查，神经肌肉或骨科疾病阴性。对透析后血压的分析显示出缓慢而逐渐的下降。从患者出现症状之日起，血压低于80/40mmHg。通过增加米多君的姿势来校正血压，从而治愈了DHS。
结论：考虑到探索的消极性，纠正动脉低血压后症状的治愈，透析症状的节律性，症状的复发伴随着血压的下降，我们认为低血压是解释DHS的唯一病因.
方法：病例报告。
结果：一名有严重肾脏病史（5年后透析）的患者主诉了20个月的头部坠落。症状被透析治疗打断，透析后加重。神经学临床和临床旁探查，神经肌肉或骨科疾病阴性。对透析后血压的分析显示出缓慢而逐渐的下降。从患者出现症状之日起，血压低于80/40mmHg。通过增加米多君的姿势来校正血压，从而治愈了DHS。
结论：考虑到探索的消极性，纠正动脉低血压后症状的治愈，透析症状的节律性，症状的复发伴随着血压的下降，我们认为低血压是解释DHS的唯一病因.
