A 44-year-old man with an ulcerating skin rash in the setting of advanced human immunodeficiency virus infection Cytomegalovirus (CMV) is a common opportunistic pathogen among immunocompromised patients. However, cutaneous manifestations are rare. We report a 44year-old man with an ulcerating skin rash secondary to cutaneous CMV infection in the setting of advanced, untreated HIV infection. A 44-year-old man diagnosed with advanced HIV in July 2011, with a CD4 cell count 4 (1%) cells/mL at diagnosis. He took antiretroviral therapy (ART) intermittently from July 2011 until January 2016 and has steadfastly declined ART and monitoring of HIV since then, being agreeable to symptomatic management only. He had Pneumocystis jirovecci pneumonia and CMV oesophagitis in July 2011, CMV retinitis involving both eyes in 2012-2013, resulting in bilateral blindness in spite of valganciclovir and intravitreal foscarnet treatment, which he ceased in January 2016. His CD4 cell count increased to 254 cells/ mL in December 2015, but was 4 (1%) in January 2017 off ART and prophylaxis. He experienced recurrent