The dragon infection is a powerful infection caused by parasites that are often found in contaminated water, potions made by scientists, and in special fruits (which your friend consumed). Once someone is infected they will tern into a dragon within a week or so. Sines of infection include a sore throat, high temperature, visible vanes, de pigmentation in the eyes, rough skin, ECT. Most people often lose themselves but some had gained control of their dragon form. There is a cure but it’s rare.