I don't necessarily have this problem with taking showers, but I do have a similar problem with washing my hands. Sometimes I'll wash my hands 50-100 times a day (we run out of hand soap very quickly ). I've had this problem for as long as I can remember. It does a lot of damage to the skin on my hands (right now they have cuts all over and severe dry skin). I also have OCD so I agree with cynicalsierra when she says you may want to consider the fact that you might also have OCD.