Restless legs syndrome (RLS) is like a fingerprint; everyone's experience with it is unique. Some people call RLS the "frantic muscles" or "jitters." Some people may describe it as aching, tingling sensations deep within their legs, while others may say they feel like lightning is running through their veins. Descriptions such as creeping, crawling, or tugging are also very common words used by people with RLS. While symptoms vary from person to person, they are always accompanied by a strong urge to move the legs. The following is a list of terms often used to describe the sensations felt by people with RLS. Since everyone experiences RLS differently, it is important that you talk to your heath care professional if you experience any of these symptoms. Keep in mind, this is not a full list, and you might use your own words to describe your symptoms.