Quick Summary
- Tinea versicolor is a common fungal (yeast) overgrowth that causes patches of lighter, darker, or pink skin, often with a fine scale.
- Vitiligo is an autoimmune condition that destroys pigment-producing cells, resulting in patches of completely depigmented (milky-white) skin.
- Tinea versicolor patches often have subtle scale and may become more noticeable after sun exposure (since affected skin doesn't tan normally).
- Vitiligo patches are typically stark white with no scale, and often appear symmetrically on both sides of the body.
- A simple in-office test (a Wood's lamp or skin scraping) can distinguish the two quickly.
Tinea versicolor and vitiligo can both cause noticeable patches of lighter skin, which leads to real anxiety since the two conditions are treated completely differently — one is a common, very treatable fungal overgrowth, and the other is a chronic autoimmune condition.
What Tinea Versicolor Is
Tinea versicolor is caused by an overgrowth of yeast (Malassezia) that lives naturally on everyone's skin but can multiply excessively in warm, humid, or oily conditions. This overgrowth interferes with normal pigmentation, creating patches that can appear lighter, darker, or pink compared to surrounding skin — often with a fine, subtle scale visible when scratched gently. Because affected skin doesn't tan normally, the patches often become more noticeable in summer months when surrounding skin darkens. It's most common on the chest, back, and shoulders.
What Vitiligo Is
Vitiligo is an autoimmune condition in which the immune system attacks and destroys melanocytes, the cells responsible for skin pigment. This results in patches of skin that are completely depigmented — a stark, milky white, without any scale or texture change. Vitiligo often appears symmetrically (matching patches on both sides of the body) and commonly affects areas like the hands, face, and around body openings, though it can appear anywhere. It's a chronic condition that can be progressive and is sometimes associated with other autoimmune conditions.
Key Differences at a Glance
| Feature | Tinea Versicolor | Vitiligo |
|---|---|---|
| Cause | Yeast (fungal) overgrowth | Autoimmune destruction of pigment cells |
| Texture | Often subtle scale when scratched | Smooth, no scale |
| Color | Lighter, darker, or pink patches | Stark white (complete pigment loss) |
| Symmetry | Usually not symmetric | Often symmetric on both sides |
| Treatability | Responds well to antifungal treatment | Chronic; various treatments manage, don't always cure |
How Dermatologists Tell Them Apart Quickly
A Wood's lamp (a special UV light) or a simple skin scraping examined under a microscope can confirm tinea versicolor in minutes by identifying the yeast directly. Vitiligo is typically diagnosed by its characteristic appearance and distribution, sometimes with a Wood's lamp exam as well, which makes the stark white patches even more visible.
Noticed new light or discolored patches?
Our board-certified dermatologists see patients at our Burien and Bellevue offices — same-week appointments are often available.
Schedule a Skin CheckWhen to See a Dermatologist
Any new patch of altered pigmentation is worth having evaluated, both to get the right treatment and, in the case of vitiligo, to discuss management options and screening for associated conditions. Tinea versicolor typically clears well with antifungal shampoo, cream, or oral medication, though pigment can take months to fully even back out after the infection clears.