灼热足（感觉脚部痛热）的症状可轻可重。在某些情况下，灼热足可能痛苦到干扰睡眠的程度。某些状况导致的灼热足也可能伴有针刺感（感觉异常）或麻木感，或两者兼有。
灼热足也可以称为脚部刺痛或感觉异常。
虽然疲劳或皮肤感染也能导致暂时性的足灼热或发炎，但灼热足更多是神经损伤（周围神经病变）的体征。神经损伤有许多不同的原因，包括糖尿病、长期饮酒、接触某些毒素、维生素 B 缺乏症或艾滋病毒感染。
如果出现以下情况，请寻求急救医疗护理：
- 脚部灼热感骤至，尤其如果您可能曾接触过某种类型的毒素
- 脚上的开放伤口似乎感染，尤其如果您患有糖尿病
如果您出现以下症状，请安排就医：
- 即便自我护理几周，仍持续出现灼热足
- 注意到症状正越来越强烈和痛苦
- 灼热感已经开始向上扩散入腿部
- 脚趾或脚开始失去知觉
如果您的灼热足持续存在或者没有明显原因，则医生就需要做检查，以确定罪魁祸首是否是导致周围神经病变的多种状况之一。
显示参考文献
- Eleftheriadou I, et al. A patient with type 2 diabetes and a burning sensation in his feet. BMJ. 2014;349:1.
- Rutkove SB. Overview of polyneuropathy. http://www.uptodate.com/home. Accessed Sept. 20, 2016.
- Ropper AH, et al. Diseases of the peripheral nerves. In: Adams & Victor's Principles of Neurology. 10th ed. New York, N.Y.: The McGraw-Hill Companies; 2014. http://www.accessmedicine.com. Accessed Sept. 20, 2016.
- Athlete's foot. American Podiatric Medical Association. http://www.apma.org/learn/FootHealth.cfm?ItemNumber=978. Accessed Sept. 21, 2016.
- Peripheral neuropathy fact sheet. National Institute of Neurological Disorders and Stroke. http://www.ninds.nih.gov/disorders/peripheralneuropathy/detail_peripheralneuropathy.htm. Accessed Sept. 21, 2016.
- Tarsal tunnel syndrome. American College of Foot and Ankle Surgeons. https://www.foothealthfacts.org/conditions/tarsal-tunnel-syndrome. Accessed Sept. 21, 2016.
- Polyneuropathy. Merck Manual Professional Version. http://www.merckmanuals.com/professional/neurologic-disorders/peripheral-nervous-system-and-motor-unit-disorders/polyneuropathy. Accessed Sept. 21, 2016.
Original article: https://www.mayoclinic.org/zh-hans/symptoms/burning-feet/basics/causes/sym-20050809