An abnormal separation or splitting of blood flow in the body, a rare medical condition affecting circulatory distribution.
From Greek 'dia-' (through) + 'rhema' (flow), derived from medical terminology combining prefix meaning 'apart' with root meaning 'stream' or 'current'.
This is one of those medical terms that barely appears in English texts—it's so obscure that even most doctors would need a reference! It represents how medical Greek can create words for conditions so rare they're almost forgotten.
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