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Rainscald
Rainscald (also known as ''dermatophilosis'', ''rain rot'' and ''Streptothricosis'') is a common skin disease in horses that is caused by ''Dermatophilus congolensis''. This is the same organism that causes Mud fever in horses. This disease is very common in cows, sheep and goats and is also found occasionally in cats, dogs, and humans. D. congolensis is a gram-positive bacteria that is thought to originate from the soil. It commonly causes disease in moist, tropical areas, but can also be found in wet northern environments. Moisture and high temperatures facilitate the dispersal and penetration of zoospores into the skin, contributing to the spread of the disease.
Ticks, biting flies, and contact with other infected animals also causes the spread of rainscald. Once in the skin, the bacteria cause inflammation of the skin as well as the typical symptoms associated with rainscald.
==Symptoms==
There are two different manifestations of rainscald: the winter form, which is more severe due to the longer coat of the horse, and the summer form, which is less severe.〔 Horses are usually affected on the back, head, and neck, where insects commonly bite, and the legs, which are commonly infected if the horse is kept in moist footing.〔 Initially, the horse will display a matted coat and bumps which will then progress to crusty scabs and lesions.〔 The animal may also be itchy and display signs of discomfort.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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