Reliability and Validity of the Turkish Version of General Sleep Disturbance Scale (GSDS-T) in Multiple Sclerosis

This study is testing the reliability and validity of a Turkish translation of a sleep questionnaire called the General Sleep Disturbance Scale (GSDS-T) in people with multiple sclerosis (MS). **You may be eligible if...** - You are 18 or older and have been diagnosed with multiple sclerosis for at least two years - Your MS disability score (EDSS) is greater than 2 - You do not currently meet diagnostic criteria for insomnia (a separate sleep disorder) - Turkish is your native language and you can speak and understand it well **You may NOT be eligible if...** - You have severe muscle stiffness (spasticity) - You have significant vision or hearing problems - You have a diagnosed mental illness such as major depression, schizophrenia, or bipolar disorder - You are currently in an acute relapse of MS Talk to your doctor to see if this trial is right for you.