In 2014, Basmanav et al. discovered various mutations in the POGLUT1 gene in individuals diagnosed with DDD who exhibited a disseminated pattern of brownish macular and lentiginous lesions on the extremities, trunk, and neck, rather than the typical domination of flexural folds commonly seen in classical DDD [13]. This evidence concerns the gene POGLUT1 and Dowling-Degos disease 1.