Leviticus 13:17-27

17 who will examine you again. If the sore has turned white, you are ritually clean, and the priest shall pronounce you clean.
18 If any of you have a boil that has healed
19 and if afterward a white swelling or a reddish-white spot appears where the boil was, you shall go to the priest.
20 The priest shall examine you, and if the spot seems to be deeper than the surrounding skin and the hairs in it have turned white, he shall pronounce you unclean. It is a dreaded skin disease that has started in the boil.
21 But if the priest examines it and finds that the hairs in it have not turned white and that it is not deeper than the surrounding skin, but is light in color, the priest shall isolate you for seven days.
22 If the spot spreads, the priest shall pronounce you unclean; you are diseased.
23 But if it remains unchanged and does not spread, it is only the scar left from the boil, and the priest shall pronounce you ritually clean.
24 In case any of you have been burned, if the raw flesh becomes white or reddish-white,
25 the priest shall examine you. If the hairs in the spot have turned white and it appears deeper than the surrounding skin, it is a dreaded skin disease that has started in the burn, and the priest shall pronounce you unclean.
26 But if the hairs in it have not turned white and it is not deeper than the surrounding skin, but is light in color, the priest shall isolate you for seven days.
27 The priest shall examine you again on the seventh day, and if it is spreading, it is a dreaded skin disease, and the priest shall pronounce you unclean.
Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.