The Spanish word 'sarampión' (meaning 'measles') comes from the Medieval Latin term 'sirimpio', which referred to a skin eruption. This etymology makes intuitive sense since measles is characterized by a distinctive red rash or skin eruption that spreads across the body - one of the disease's most recognizable symptoms.

While there aren't many common Spanish words directly related to 'sarampión', it's worth noting that in Spanish medical terminology, words describing skin conditions often maintain similar patterns, though they generally come from different etymological roots.

There aren't any commonly used English words that share the same etymological root as 'sarampión'. The English word 'measles' comes from a different etymological source - Middle Dutch 'maselen', meaning 'spots'. However, both words evolved to describe the same disease by focusing on its characteristic skin manifestations.