Excess water in the intestine
This is not strictly speaking a disease. It is a condition the bees can get into in the winter. It may be due to the following:-
Unripe honey and/or late feeding
Alcohol due to fermenting stores
Brown, raw or acid inverted sugars used for feeding
Long periods wintered on heather honey.
When the rectum weight of the bee reaches ⅓ of the bees weight comb soiling starts
When the rectum weight of the bee reaches ½ of the bee’s weight dysentery is certain
Signs in the colony
Fouling of the combs, around the hive and in the entrance.
In severe cases and bad weather it can kill a colony. It is more likely that colonies weakened by this condition succumb to virus infections.
Often associated with spreading Nosema
Avoid the causes
Feed a thick syrup