In America: Yes, up until the point where the patient is declared to be incompetant or temporarily incompetant. At this point, whoever is acting as their personal representitive (e.g in loco parentis), may require them to accept medical care. Likewise, the court can be petitioned to order the patient to accept medical care.
No. You are in custody. If you are injured or sick and refuse medical treatment you will transported to a medical facility anyway. The assumption is that you are not in control of your faculties and are incapable of making rational decisions. The police will have you examined and/or treated as part of their "due dilligence and care" of you while in their custody.
No.
Certainly! In general, you have the right to refuse any medical treatment.
When a person is competent and is not intent to do self-harm, he or she can refuse treatment. A person designated to make medical decisions for another person who is unconscious and cannot speak for themselves can direct treatment.
A person can refuse to have a feeding tube; the Supreme Court has ruled that a person has the right to refuse medical treatment .
Any competent patient, including a cardiologist, can choose not to get treatment for any condition.
A health care provider can refuse to provide treatment as long as the provider refers to the patient to other providers for continuation of care.
if you are in your right mind and can answer questions such as your name the date the president, then you can refuse treatment, they cannot take you against your will if you are in sound mind and can answer those questions it constitutes as assult and battery, you can sue on those grounds if you were in your right state of mind. Anyone can refuse any treatment they do not wish to have done regardless. They can only perform a treatment with your full consent and if you have not consented then sue them for every penny they have got - get their licences revoked. I have refused treatment on numerous occassions and there is nothing they can do about it
People have a right to refuse medical treatment. Be sure to have a witness in case there are legal problems later.
Check the Emergency Medical Treatment and Active Labor Act (EMTALA)
Passage of the Patient Self-Determination Act.
Generally, people who are in police custody are to be provided with necessary medical attention. The police officers may have some discretion to refuse unreasonable requests.