“…Primary anetoderma should be distinguished from secondary anetoderma, which consists of areas of atrophic skin that appear in the same site as a previous specific skin lesion. There are numerous and heterogeneous dermatoses associated with secondary anetoderma, including syphilis, 3 leprosy, 3 sarcoidosis, 3 granuloma annulare, 4 tuberculosis, 3 human immunodeficiency virus infection, 5,6 folliculitis, 7 angular cheilitis, 8 acrodermatitis chronica atrophicans, 3 lupus erythematosus, 3 amyloidosis, 3 lymphocytoma cutis, 9 cutaneous plasmacytoma, 9 cutaneous B‐cell lymphoma, 10 urticaria pigmentosa, 11,12 juvenile xanthogranuloma, 13 immunocytoma, 14 prurigo nodularis, 15 pilomatricomas, 16–18 sites of attachment of gel electrocardiographic electrodes in premature infants, 19–21 varicella, 22 acne vulgaris, 22 lichen planus, 22 melanocytic naevus, 22 dermatofibroma, 22 xanthoma, 22 and following penicillamine therapy 23 or hepatitis B immunization 24 . The pathogenesis of both primary and secondary anetoderma remains uncertain.…”