Is it permissible for a girl to uncover her hijab in front of a doctor to consult him about strengthening her hair, without there being an illness?

A woman is not permitted to expose her 'awrah to a male foreign doctor except in cases of urgent necessity, and if there is no female doctor or a male doctor who is a mahram available, with the condition that there is no seclusion. Hair loss is considered a necessity that permits exposure to a doctor to the extent of the necessity.