Pictures are taken from a handout distributed a company that manufactured Efudex. They show how a patient looks before, during and after treatment. Unfortunately, the duration of treatment for a thorough removal of precancers could be as long as six weeks. Even if quenching steroids are given, patients still have an appearance that would interfere with business and or social functions. The website author has found that patients with an underlying tendency for skin diseases like rosacea or seborrheic dermatitis are prone to severe reactions to such treatments.