Exploratory Study on the Timing of Multiple Sclerosis (MS) Symptoms

This study is researching whether the timing and nature of multiple sclerosis (MS) symptoms are related to hormonal and immune changes throughout the menstrual cycle in women with relapsing-remitting MS. **You may be eligible if...** - You are a woman - You have been diagnosed with relapsing-remitting multiple sclerosis (the most common type of MS) **You may NOT be eligible if...** - You are male - You do not have a relapsing-remitting MS diagnosis - You have another autoimmune disease or fibromyalgia - You are menopausal or post-menopausal (naturally or surgically) - You have been pregnant in the past year or are currently breastfeeding - You have a history of chemotherapy - You are on experimental medications - You have used steroids in the last 30 days Talk to your doctor to see if this trial is right for you.