- or sharply defined.
- They do not improve with appropriate treatment.
- New areas of depigmentation continue to appear.
- You develop other unusual symptoms.
A dermatologist can examine the skin and, when necessary, perform additional tests to distinguish pityriasis versicolor from other pigmentation disorders.
Final Takeaway
White or lighter patches that become more noticeable after summer sun exposure are often harmless, but their appearance alone cannot establish the diagnosis.
Pityriasis versicolor is a common possibility, particularly when patches occur on the trunk, shoulders or neck and are associated with heat and sweating.
