TT #156 · Parshas Tazria · Aliyah 3 · Passuk 19
English: If, at the place of the boil, there is a white swelling or a bright reddish-white spot, it shall be shown to the priest.
Chabad.org — Chumash, English translation + Rashi for Vayikra 13:19
Sifra (Toras Kohanim).
Sifra — Vayikra 13, Midrash Sefer
English: The general term 'plague of tzaraas' applies what is stated of one appearance to the other, and vice versa.
Textual derivation
The general designation of tzaraas extends the stated rules across the two appearances.