Hi, I am a 29 year old female of good health, however in the past few months I have developed severly itchy skin, sometimes it is so intense it drives me mad. It is mainly my back and legs that itch. When I scratch my legs large bruises appear.. At present the whole left outer side of my thigh is cover in a bruise. After bruising my legs feel tender, can you help me figure out what this is? Do you think I should visit my GP? I have read all sorts like rare blood disorders, cancer! Am starting to worry!