The mnemonic
Coral Erythrasma, Green Microsporum
What each word stands for
- ErythrasmaCoral-red fluorescence
- MicrosporumGreen fluorescence of hair
- Pityriasis versicolorYellow-gold fluorescence
Why it matters clinically
Gives a quick diagnostic test.
Where it stops being reliable
Trichophyton tonsurans does not fluoresce, and only some pigmented disorders are shown.
Teaching aid, still awaiting independent review. Confirm facts in a standard source.