Tinea versicolor when pregnant: what to know

Tinea versicolor, also called pityriasis versicolor, develops when a yeast that normally lives on skin grows more actively. It can cause lighter, darker, or pinkish patches with fine scaling, often on the chest, back, shoulders, or neck. Warm, humid conditions and sweating can make it more noticeable. The colour may remain uneven after the yeast is controlled, because pigment recovery can take time. A visual diagnosis is not always certain, since other rashes can resemble it.

Arrange a routine assessment if the diagnosis has not been confirmed. Keep affected skin cool and dry, change out of damp clothing, and avoid sharing towels or clothing. Do not start oral antifungal medicine or apply a medicated product without checking whether it is appropriate for your pregnancy and trimester. A clinician may consider a [Topical Antifungal Treatment](/treatments/medical-dermatology/topical-antifungal-therapy/) or [Medicated Shampoo Treatment](/treatments/medical-dermatology/medicated-shampoo-therapy/), depending on the area and appearance. Gentle cleansing is preferable to scrubbing.

Seek prompt medical advice if the rash is painful, rapidly spreading, blistered, oozing, very inflamed, or associated with fever. Contact your maternity team urgently for any severe illness, facial swelling, breathing difficulty, or a new widespread rash during pregnancy. A clinician should reassess patches that do not improve, keep returning, or look different from your usual [Tinea Versicolor](/conditions/tinea-versicolor/).

Ask whether the appearance fits tinea versicolor, whether a skin test is useful, which ingredient is suitable during pregnancy, and how long colour changes may remain after treatment.