And the man whose hair is fallen off his head
That is, from the back part of his head, from the crown of his
head toward his neck behind: he [is] bald;
in that spot of the head where the hair is fallen off; and it
denotes such a baldness as is occasioned by that, for it
signifies one that had hair, but it is fallen off; whereas the
baldness after spoken of is thought by some to be of such who
never had any hair; though others will have it, that this intends
a person bald all over; but it seems plain from what follows,
that it designs one whose hair was fallen off behind, and was
bald on that part only; and it may be observed, that this is only
said of a man, not of a woman, because, as Aben Ezra remarks, she
has much moisture in her, and therefore her head does not become
bald; hair being like to grass, which flourishes in moist places:
[yet is] he clean;
from the leprosy, or from the scalls, as Jarchi observes, because
he is not judged by the signs of the head and beard, which are
the place of hair, but by the signs of leprosy in the skin of the
flesh, i.e. by the raw flesh and spreading.