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Papillomatous Digital Dermatitis (PDD), commonly known as Hairy Hoof Wart or Hairy Heel Wart, is an infectious-claw disease in cattle caused by a bacteria. Affected cows will develop sore eczema on the skin (canopy edge) related to clover.

Eczema is painful and can cause lameness of different degrees.  It lowers reproductive efficiency and reduces milk production.

Problems with digital dermatitis occurs mainly in groups where poor hygiene in manure paths may exist or introduction of infected animals into the herd.