Mayo Clinic, Rochester, MN, USA.
Semin Pediatr Neurol. 2010 Jun;17(2):109-16. doi: 10.1016/j.spen.2010.04.006.
Orthostatic intolerance (OI) refers to a group of clinical conditions, including postural orthostatic tachycardia syndrome (POTS) and neurally mediated hypotension (NMH), in which symptoms worsen with upright posture and are ameliorated by recumbence. The main symptoms of chronic orthostatic intolerance syndromes include light-headedness, syncope or near syncope, blurring of vision, headaches, problems with short-term memory and concentration, fatigue, intolerance of low impact exercise, palpitations, chest pain, diaphoresis, tremulousness, dyspnea or air hunger, nausea, and vomiting. This review discusses what is known about the pathophysiology of this disorder, potential treatments, and understanding its role in the patient with chronic headache pain.
直立不耐受（OI）是一组临床病症，包括体位性心动过速综合征（POTS）和神经介导性低血压（NMH），这些病症在直立时症状加重，而平卧时症状减轻。慢性直立不耐受综合征的主要症状包括头晕、晕厥或接近晕厥、视力模糊、头痛、短期记忆和注意力问题、疲劳、不能耐受低冲击运动、心悸、胸痛、出汗、震颤、呼吸困难或空气饥饿、恶心和呕吐。本综述讨论了关于这种疾病的病理生理学、潜在治疗方法的已知信息，以及了解其在慢性头痛患者中的作用。
