Mud fever 1911499 219713483 2008-06-16T15:18:51Z Fratrep 4541225 Repairing link to disambiguation page - [[Wikipedia:Disambiguation pages with links|You can help!]] {{Unreferenced|date=May 2007}} [[Image:Dermatophilus.jpg|thumb|''Dermatophilus congolensis'', a causative agent of mud fever]] '''Mud fever''' is a group of diseases of [[horse]]s causing irritation and dermatitis in the lower limbs of horses. Often caused by a mixture of bacteria, typically ''[[Dermatophilus congolensis]]'', and ''[[Staphylococcus|Staphylococcus spp]]'', mud fever can also be caused by fungal organisms ([[dermatophyte]]s). [[Photosensitivity in animals|Photosensitization]], chorioptic mange mites, contact dermatitis and other conditions also contribute to some cases. This condition is often called ''scratches'' or ''dew poisoning'', but is also known as ''pastern dermatitis'', ''grease heel'', or ''greasy heel''. Mud fever affects most horses and ponies during winter and early spring. Resulting in painful sores and scabs, which in severe cases can make a horse lame. Mud fever most commonly affects the [[pastern]] and [[heel]] area but can also affect the upper leg, the belly, and in some cases the neck area (also known as Rain Scald). Non-pigmented skin tends to be more severely affected. ==Cause== Mud fever is caused by an infection of the skin by bacteria, including ''Dermatophilus congolensis'', and often ''Staphylococcus spp.'' Dermatophytes (fungal organisms) can also contribute, as can chorioptic [[Mange|mange]] mites. Photosensitivity may contribute in certain cases. Rarely, [[vasculitis]] can cause continued inflammation.<ref>{{cite book |last=Pascoe |first=Reginald R. |coauthors=Knottenbelt, Derek C. |title=Manual of Equine Dermatology |url=http://books.google.com/books?id=tdHsLjvHz14C&printsec=frontcover&source=gbs_summary_r&cad=0#PPA202,M1 ||accessdate=2008-05-31 |year=1999 |publisher=Elsevier Health Sciences |location= |isbn=0702019682 |oclc= |doi= |id= |pages=p. 202 |chapter=Iatrogenic and Idiopathic Disorders }}</ref> Under normal circumstances the skin acts as a protective barrier, preventing microorganisms from entering the horse's system and doing any damage. However, the integrity of the [[Epidermis (skin)|epidermis]] can become compromised through the abrasion of soil grit on cold, wet skin. The continual wetting of the skin causes a breakdown of the protective barrier of the epidermis, allowing the bacterium to enter and cause infection. Shared boots, wraps, grooming supplies, and horse-handler's hands can all serve as [[fomite]]s, carrying the causative organism(s) from one individual to another. For this reason, mud fever should be considered a contagious disease, and general hygiene steps should be taken to limit cross-contamination. Horses and ponies standing for hours in muddy, wet [[paddock]]s and at gates are a common sight during the winter months and early spring. It is in these conditions that mud fever thrives. Generally, those horses and ponies with white socks are more prone to the condition, although Mud Fever will affect horses of all breeds, ages and colours. As with any bacterial infection, Mud Fever can become a very serious condition very quickly. The legs can become swollen and sore and open sores can become quickly infected. Often, such is the level of damage to the skin that these open sores can become very difficult to heal and can result in [[proud flesh]], permanent hair loss and in severe cases the need for [[skin graft]]s. In [[Draft horse|draft horses]], particularly [[Clydesdale (breed)|Clydesdales]], [[Shire (horse)|Shires]], and [[Belgian (horse)|Belgians]], a similar-appearing, but more serious condition occurs called chronic progressive [[lymphedema]]. This condition appears to be genetically-linked, starting early in life and progressing, causing thickening, fibrosis, and predisposing to secondary infections. This disease can progress enough to require [[Animal euthanasia|euthanasia]].<ref>{{ cite journal | last =Center for Equine Health UC Davis | authorlink =http://www.vetmed.ucdavis.edu/ceh/ | coauthors = | year = 2006| month =January | title =Equine Dermatology | journal =The Horse report | volume =24 | issue =1 | pages =p.8 | id = | url =http://www.vetmed.ucdavis.edu/ceh/pubs-HR24-1-bkm-sec.pdf | accessdate = 2008-06-01 }}</ref> ==Prevention== ===Paddock Management=== Preventative action should be taken as soon as the paddocks start to become wet and muddy. Rotation of paddocks keeps horses from having to stand in wet, muddy ground. Electric fencing may also prevent horses from standing for long periods in the deep mud that collects in high traffic areas. ===Grooming=== Washing the infected area with an antiseptic solution is part of the treatment for mud fever. However, washing a horse's legs repeatedly can remove the natural oils in the skin and may allow the condition to become established. The legs should be dried thoroughly after washing with antibacterial shampoo using paper towels, ===Care Products=== There are many products available to help protect the skin from the constant wet by forming a barrier between the mud and the leg. However, barrier creams have the disadvantage that the horse's legs are still covered in mud when they come in from the field. Alternatively, some form of covering for the leg may be used such as Anti mud fever boots. ==Treatment== Keeping the horse out of the wet and mud is the first step in treatment of mud fever. Initial treatment also consists of clipping of the hair away from the infected area and use of an anti-bacterial lotion on the scabs to soften them and gently remove them. When the scabs are removed, the skin is kept clean and dry. A [[Veterinary Surgeon]] is consulted for further treatment. ==References== {{reflist}} This article is copied in part from the [http://www.equilibriumproducts.com/mud_fever/coping_with_mud_fever/ Equilibrium website]. Used by permission. ==See also== *[[Rainscald]] {{Equidae}} [[Category:Horse diseases]]