History: Tinea nigra is an uncommon superficial dermatomycosis usually caused by Hortaea werneckii.  The infection appears as a hyperpigmented macule, which most commonly  occurs on the palms but soles may also get involved. The pigmentary change in the skin results in a dark-colored macule due to the accumulation of a melaninlike substance in the fungus. Tinea nigra is believed to occur as a result of inoculation from a contamination source such as soil, sewage, wood, or compost subsequent to trauma in the affected area.
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