Leviticus 13:43

Then the priest shall look upon it
The white reddish sore:

and, behold, [if] the rising of the sore;
or the swelling of it:

[be] white reddish in his bald head, or in his bald forehead;
(See Gill on Leviticus 13:42):

as the leprosy appeareth in the skin of the flesh;
as in ( Leviticus 13:2 ) ; having the signs of the leprosy there given; anyone of them, excepting the white hair, which in this case could be no sign, there being none: Jarchi's note is, according to the appearance of the leprosy, said in ( Leviticus 13:2 ) ; and what is said in it is, it defiles by four appearances, and is judged in two weeks; but not according to the appearance of the leprosy said of the boil, and burning, which were judged in one week; nor according to the appearance of the scalls, of the place of hair, which do not defile by the four appearances, the rising or swelling, and the scab of it, the bright spot, and the scab of that.