The term KHADRAN (الخدران) is translated as Narcolepsy which is a sleep disorder, but a better translation for KHADR is Narcosis or STUPOR.
Narcolepsy is a condition characterized by an extreme tendency to fall asleep whenever in relaxing surroundings.
Stupor is the lack of critical cognitive function & level of consciousness where in a sufferer is almost entirely unresponsive & only responds to base stimuli such as pain. Being characterized by impairments of reactions to external stimuli, it usually appears in infectious diseases, complicated toxic states, severe hypothermia, mental illnesses (e.g. schizophrenia, severe clinical depression), vascular illnesses (e.g. hypertensive encephalopathy), neoplasms (e.g. brain tumors) & vitamin D deficiency & so on.
1. Abu Ubaid said in his Book "Gharib Al Hadees" that some people passed by a tree, & they ate from the tree & they soon got immobilized, just as if a wind had swept through by them & froze them. Nabi ﷺ said: "Cool some water in water skins & then pour the water on them between the two Azaanain (the Fajar call to the Salah & the Iqamah)".
[Musannaf Ibn Shaiba: 12/154 & Baihaqi: 4/224]
Nabi ﷺ mentioned water skins because water gets cooler in skin water bags (Mashak) than clay containers. That time water was stored in skin water bags (mashak).