I found this. It is not the US policy, but my expectation would be that this is a common standard at least in the western world.
…if there are clear medical reasons, for example, head wounds, hair
loss through medical treatment or illness, a scarf or bandage can be
accepted as long as it does not cover the face.
To my knowledge, face recognition software usually does not use a forehead as a defining feature. Neither do people who verify pictures (e.g. border guards) in IDs are trained to do since forehead can be covered by hair.
Credit:stackoverflow.com‘
5 Mar, 2024
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