Hi I have severe unexplained bruising that started on thighs and has spread to back of knees and calf and abdomen and upper arms. Accompanied by fevers, extreme exhaustion, vomiting, hair loss, weight loss and feeling very blah. Lately I have also started to itch badly all over. I understand I should see a doctor but am scared. What are possible causes? 34 year old female 5 foot 4, 130 lbs down from 155 in two months. Thank you, Kelli