Contraction of summerheat-heat in the summer months. Thermoplegia is the term used in Essential Prescriptions of the Golden Cabinet (金匮要略 jīn guì yào lüè) to refer to summerheat damage. It is characterized by heat effusion, spontaneous sweating, vexing thirst, reddish urine, scantness of breath, and a vacuous pulse. At onset, it is usually marked by exterior signs. Often, it is complicated by cold or dampness. Furthermore, it invariably causes damage to both qì and yīn, creating a vacuity-repletion complex. Thermoplegia is basically identical to what Plain Questions (素问 sù wèn, sān bù jiǔ hòu lùn), 53, Treatise on Points to Remember When Needling, describes as qì vacuity generalized heat that is contracted through summerheat damage. However, this differs from the thermoplegia (or summerheat strike) described in the The Origin and Indicators of Disease (诸病源候论 zhū bìng yuán hòu lùn, jí huáng hòu) as as arising when [people] traveling far under a torrid sun suddenly cloud and collapse.