A grandparents' medical consent form allows a parent or legal guardian to hand over all responsibility regarding their child's healthcare decisions. Ensure your child's well-being with our easy-to-use child medical consent form., a person under the age of 18) has the same capacity as an adult to consent to medical or dental treatment if minor: 1) Is married;. Grandparent Consent to Minor (Child) – Specifically for grandparents who will have the legal right to choose the medical treatment for a minor (child). You can make all decisions about the provision, withholding, or withdrawal of any specific medical treatment or any course of treatment. This index contains forms you may need for Maryland guardianship cases. Two witnesses must co-sign the form.