The most common cause of uneven pigmentation like this is a condition known as pityriasis versicolor. It is caused by an overgrowth of the yeasts that are normally found in small numbers on the skin.

Tinea versicolor happens when there’s an overgrowth ... and increased sweating. Pityriasis alba is a skin condition that causes small, round patches of skin to lose their color.

(pathology) A skin condition of a yeast infection causing discoloured patches on the trunk and proximal extremities. pityriasis versicolor condition ...

Tinea versicolor is a condition characterized by a skin eruption on the trunk and proximal extremities. The majority of tinea versicolor is caused by the fungus Malassezia globosa, although Malassezia ...

Pityriasis rosea is a common skin condition that will usually ... can help treat hive symptoms until they get better and help manage chronic outbreaks. Tinea versicolor is a fungal skin infection by ...