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→Clinical Signs
==Diagnosis==
==Diagnosis==
===Clinical Signs===
===Clinical Signs===
of chronic constipation, tenesmus, anorexia, vomiting
Idiopathic megacolon is likely to be a long-term, recurring problem, with clinical sgns presenting over months to years. In acquired megacolon, signs can be acute or chronic in onset.
and weight loss. Perineal swelling is seen in those with
The primary sign of megacolon is constpation or obstipation (severe constipation caused by intestinal obstruction). Animals suffer tenesmus when defaecating and produce little or no faeces. Faeces that is expelled is very hard and dry, and animals defaecate less frequently. After prolonged tenesmus, a small amount of often mucoid diarrhoea may be expelled. Vomiting, anorexia and weight loss are other key features.
examination and diagnostic evaluation to rule out concurrent
On clinical examination, an enlarged colon packed with hard faeces is palpated within the abdomen. The animal may be dehydrated, and the hair coat rough. Digital anorectal examination is necessary, and confirms faecal impaction as well as potentially revealing an underlying obstructive cause.
===Laboratory Tests===
===Laboratory Tests===