Leviticus 13:2 gives the general law for skin diseases (swelling, rash, spot) that the priest examines — this verse applies that same examination when the spot spreads.

Leviticus 13:7 describes the same spreading after examination — the person must show himself again to the priest, confirming the leprosy diagnosis here.

Leviticus 13:35 deals with spreading after being declared clean — a later stage of the same diagnostic pattern, contrasting with the initial spread here.

Leviticus 14:39 is about mildew in a house (not skin) — the priest's inspection and spreading test mirrors the skin disease procedure here.