'Swelling' in the Bible
"When a person has a swelling or a scab in the skin on his body that turns white in appearance and appears to be more extensive than skin deep, he is to be brought to Aaron the priest or to one of his sons among the priests.
The priest is to examine it. If it is, indeed, a white swelling in the skin that has turned the hair white, and yet it sustains live flesh on the swelling,
in place of the boil there remains a white swelling or a bright, white-reddish spot, he is to present himself to the priest.
But if the bright spot remains in place, doesn't spread in the skin, and it's dull, it's the swelling of the burned area. The priest is to declare him clean, since it's the scar from a burn."
When the priest examines it and finds that the swelling of the skin rash is white or reddish on his bald head or forehead, similar in appearance to an infectious disease in the skin of the body,