Quackery is the use of primitive methods of medical treatment and healing by those who only pretend to have the necessary knowledge and qualifications to heal. Sick people may put all their hope and money into quack healing, hoping it will alleviate the diseases against which modern medicine is impotent, and those diseases which standard doctors refuse to treat. Such blind faith, usually encouraged by the quack healers, can lead to severe emotional and financial distress if the alternative methods - often viewed as the last resort - fail to produce the desired effects.