Rojas-Gómez, O. F., Delgado-Ortiz, N., Zamora-Suarez, A., Mondragón-Cardona, Álvaro E., Escobar-Montealegre, F. and Jiménez-Canizales, C. E. (2022) “Painful violaceous pigmentation, a clinical challenge and diagnostic approach in a tropical country”, ACTA MEDICA PERUANA, 39(2). doi: 10.35663/amp.2022.392.2307.