From Wikipedia, the free encyclopedia. Sleep deprivation is the condition of not having enough sleep; it can be either chronic or acute. A chronic sleep-restricted state can cause fatigue, daytime sleepiness, clumsiness and weight loss or weight gain. Physiological effects: aching muscles: Piernas y brazos. confusion, memory lapses or loss: si, como borrachera y cruda, todo al mismo tiempo. depression: todavía no. hallucinations: no. hand tremors: no. headaches: muchos. malaise: si y mil veces si sensitivity to cold: hasta me resfrié. bloodshot eyes: anoché como a las 4am sentí mi ojo derecho ponerse rojo. periorbital puffiness (bags under eyes or eye bags): hasta maquillaje me puse hoy. increased blood pressure: puedo escuchar mi corazón bombeando. increased stress hormone levels: seguramente si increased risk of diabetes: damn it! increased risk of fibromyalgia: say what?! irritability: si no me dejan dormir hoy, correrá sangre! nystagmus (rapid involuntary rhy...