dermatitis [dermatitises](inflammation of the skin) noun [UK: ˌdɜː.mə.ˈtaɪ.tɪs] [US: ˌdɝː.mə.ˈtaɪ.tɪs]
sarpullidonoun {m}
rash [rashes](area of inflamed and irritated skin characterized by reddened spots; illness characterized by a type of rash) noun [UK: ræʃ] [US: ˈræʃ]John has the same rash as I do. = John tiene el mismo sarpullido que yo.