I suffer from lack of sleep and yesterday i did not sleep for more than 18 hours because to hyperactivity i felt faint is i take hypnotics?

Sleep lab: Start with stanford and ucsf sleep labs; too far away, call for one compriblle and clode this may have a cause unrelated to sleep prt so include a thorough physical exam.

Get evaluated : Many different conditions could contribute to such symptoms, such as anxiety, depression, bipolar disorder, ptsd, adhd, substance abuse, and a wide variety of medical conditions such as hyperthyroidism, gerd, restless leg syndrome, sleep apnea, etc. See your primary care doc for a thorough eval.