Lighter or Darker Patches After a Hot Season: Tinea Versicolor or Eczema?
After a warm season of outdoor activity, patches on the chest, back or upper arms may become more noticeable. Some people wonder whether the change is dry skin or eczema. Tinea versicolor is another possible explanation, and a healthcare professional can distinguish it from other causes.
What is tinea versicolor?
NIH MedlinePlus describes tinea versicolor as a superficial fungal condition related to Malassezia, a yeast normally found on skin. It is more common in warm, humid settings. The patches can be lighter or darker than surrounding skin and may have a fine scale. Tinea versicolor does not spread from one person to another.
The contrast can become more obvious after sun exposure because affected patches may not tan like surrounding skin. This does not prove the diagnosis: eczema-related color changes, pityriasis alba and other conditions can look similar.
| Question | Useful information |
|---|---|
| What to note | Record where patches occur, whether they scale or itch, how long they have been present and whether they recur. |
| At the visit | A clinician may examine the skin and, when useful, test a small scraping. |
| After treatment | Color can take months to return even when the fungus has been treated; ask how the clinician will judge progress. |
| Before using products | Ask whether the condition needs an antifungal plan. A regular cosmetic moisturizer is not an antifungal medicine. |
Care for your skin without self-diagnosing
A clinical review describes diagnosis, treatment and the possibility of recurrence, including during warmer or more humid periods. Treatment should be matched to the diagnosis and the person. Follow the advice of a pharmacist or clinician, particularly for extensive, recurring or uncertain patches.
Continue a separate sun-protection routine that works for you. Avoid harsh scrubbing to try to remove a color change; it can irritate sensitive skin. For related information, see pale patches in children and pityriasis alba and how eczema may look on darker skin tones.
Dr. Arsy Hydration Recovery Moisturizer #003 is a fragrance-free cosmetic moisturizer for dry, sensitive and eczema-prone skin. Follow the label; it does not replace medical treatment.
Sources and further reading
- NIH MedlinePlus: Tinea versicolor.
- Narrative review: Diagnosis and management of pityriasis versicolor.
- Review: Pitfalls in diagnosis and therapy of pityriasis versicolor.
Educational information from Dr. Arsy; not a diagnosis or individual medical advice. The researchers and organizations cited do not endorse Dr. Arsy products.