<qa>  What is one of the most common skin problems in teenagers and adolescents?Acne is one of the most common skin problems in teenagers and adolescents. There are many lesser known homoeopathic medicines which have been mentioned in the literature for treatment of acne but their potential has not been properly assessed documented and therefore these medicines dont form a part of many prescriptions. As a part of this study,efficacy of Azadirachta Indica will be studied in the treatment of Acne vulgaris 