PDC3 is a legal condition derived from the medical condition. For a claiment to have C3 they must have worked in an occupation in which they were involved in "The use or handling of, or exposure to the fumes, dust or vapour of phosphorus or a poisoning due to the anti-cholinesterase or containing phosphorus".
Organophosphate poisoning from any cause other than above is the medical condition but is not PDC3.
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