Sleepwalking

[stevew]

i sleep walk at least 4 times a week, i wake up in different rooms of the house, often with articles of clothing missing, one time with no pants which i later found in the dining room wet with water, not sure if i am showering in my sleep. Unexplained cuts and bruises are common. I believe i have even been outside (previously locked doors wide open). I even found my car parked in a different spot. How concerned should i be? What should i do?