the.com/diarrhoea

A digestive condition causing frequent, loose, watery bowel movements, often from infection or illness.

means An intestinal condition causing frequent, loose, watery bowel movements.

from From Greek diarrhoia, built from dia- ('through') plus rhein ('to flow') — the same 'rhein' that gives us 'rheumatic' and 'catarrh.' So the word itself just means 'flowing through,' which the Greeks apparently considered polite enough to write down.

spelling split
British diarrhoea, American diarrhea, same regret
real danger
kills via dehydration, not the mess itself
global toll
second leading cause of death under age five
fix
oral rehydration salts, not just imodium
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