It is also helpful in diagnosing:
* Fungal infections. Some forms of tinea, such as Trichophyton tonsurans, do not fluoresce.
* Bacterial infections
**Corynebacterium minutissimum is coral red
**Pseudomonas is yellow-green
* Cutibacterium acnes, a bacterium involved in acne causation, exhibits an orange glow under a Wood's lamp.