'stress-related' originates from the combination of 'stress' and 'related', where 'stress' refers to mental or emotional strain and 'related' means connected or associated with.

'stress' comes from Middle English 'stresse', derived from Old French 'estresse', meaning 'narrowness' or 'oppression'. 'Related' comes from Latin 'relatus', the past participle of 'referre', meaning 'to bring back'.

Initially, 'stress' referred to physical pressure or strain, but over time it evolved to include mental and emotional strain, leading to the modern usage of 'stress-related'.