Leviticus 13:39-44

³⁹the priest shall inspect them, and if the spots appear a dull white, it's just a rash that has developed on the skin; the person is clean.

⁴⁰If a man loses his hair and goes bald, he is still clean.

⁴¹If he has a receding hairline and he goes bald on his forehead, he is still clean.

⁴²But if a reddish-white sore appears on his bald head or forehead, it is an infectious disease developing.

⁴³The priest must inspect him, and if the swelling of the sore on his bald head or forehead looks reddish-white like a skin disease,

⁴⁴then he is has an infectious disease; he is unclean. The priest must declare him unclean because of the infection on his head.