The sense of this verse is: "Or if there be flesh of which the skin has been affected by severe inflammation, and the sore of the inflammation has become a glossy spot, somewhat reddish or white."

Or if there be [any] flesh, in the skin whereof [there is] a hot burning, and the quick [flesh] that burneth have a (h) white bright spot, somewhat reddish, or white;
(h) If he has a white spot in the place where the burning was and was later healed.

Or if there be any flesh, in the skin whereof there is a hot burning,.... Or "a burning of fire" (r): it is asked, what is a burning? that which is burnt with a coal or with hot ashes; all that is from the force of fire is burning (s); that is, whatever sore, pustule, or blister, is occasioned by fire touching the part, or by anything heated by fire:
and the quick flesh that burneth have a white bright spot, somewhat reddish, or white; the Targum of Jonathan is, a white spot mixed with red, or only white; and so Aben Ezra interprets the last clause: this seems to set aside Bochart's interpretation of the word "adamdemeth", which we render "somewhat reddish", and be, very white, bright, and glittering since white is here opposed unto it; though it may be, the sense is, that the flesh burnt has a bright white spot in it, exceeding glittering; or however, at least, a white one: by the "quick flesh" that burneth, Gersom says, is meant the weak, the tender flesh which is renewed there, after it is healed from the purulent matter in it.
(r) "adustio ignis", Pagninus, Montanus, Junius & Termellius, Piscator. (s) Misn. Negaim, c. 9. sect. 1. & Maimon. in ib. c. 6. sect. 8.

A hot burning - A burning of fire, by the touch of any hot - iron, or burning coals, which naturally makes an ulcer or sore in which the following spot is.