Cryotherapy and Acid causing genital warts with scar 

Surgical excision scar , failed genital warts treatment 

Failed genital warts or anal warts treatment is not uncommon, given the multitude of available treatment approaches. The prevalence of various methods often results in instances of treatment failure. Consequently, numerous solutions yield no significant success. Regrettably, the experience of multiple unsuccessful approaches can lead to feelings of depression and anxiety among patients. It's important to note that unsuccessful HPV treatment may potentially contribute to the spread of the virus.

Failed Treatment Case reports by other methods and different clinics 

Imiquimod causes loss of skin pigmentation and color permanently