This essay explores the legal and ethical arguments surrounding Gillick competence and the right of children to make medical decisions. It discusses the factors leading to Gillick competence assessment, the rationale behind it, and the justification for overriding a child's decision to refuse treatment. The essay also analyzes the legal and ethical arguments in two case studies related to medical treatment for minors. Overall, it highlights the importance of respecting a child's autonomy while considering their maturity and understanding of the treatment.