If he is under 16 years, then he can consent only if he has enough smarts and understanding to fully appreciate his treatment and its risks. If he is not, then a parent can consent for him.

If the patient is 16 and over he can give consent and his parent cannot overrule that. Ethically you should encourage him to involve his parents when he is between 16-18 years of age.

It is very beneficial to go and complete the MOrth Communication Skills course too.