(485) This is caused by a spirochete bacterium called Borrelia suis, together with secondary infections with other bacteria including streptococci and staphylococci. The disease is seen in pigs from three to ten weeks of age and skin damage is first necessary to allow the organism to enter. It causes considerable irritation in the tissues, severe inflammation and the development of fibrous tissue. Diagnosis requires laboratory examination and isolation of the organism. Control involves improving hygiene, reducing trauma and identifying the areas within the management system where infection first starts and making changes to these. Infected pigs can be treated with either penicillin, tiamulin or lincomycin. It is not a common disease.