Changes

==Diagnosis==

==Diagnosis==

Can often make a diagnosis on history and physical exam. Impression smears can also be useful when stained with either gram stain or Giemsa and examined microscopically.

Can often make a diagnosis on history and physical exam. Impression smears can also be useful when stained with either gram stain or Giemsa and examined microscopically.

Additionally it is possible to culture material from the crusts however this can be difficult due to the slow- growing nature of the pathogen.

Additionally it is possible to culture material from the crusts however this can be difficult due to the slow growing nature of the pathogen.

==History and Clinical signs==

==History and Clinical signs==

*Mud fever

*Mud fever

*Grease heel.

*Grease heel.

Typically  hair becomes matted and focal lesions develop into crusts and thick scabs covered by layers of yellow-green pus. When scabs are removed the hair is taken with them and alopecia results. Rain scald commonly affects the dorsum, shoulders and neck. It can however extend to lower portions of the body and abdomen. It typically begins as small rough raised bumps and can go un-noticed in0 long haired regions. Mud fever looks similar to rain scald but affects the pasterns and distal limbs. White legs and white- skinned areas are most commonly affected. Grease heel is a disease complex which presens in the same way as rain scald and mud fever over the heels. It produces a grey exudate which feels greasy to touch. The disease complex can involve dematophilosis as well as a number of other conditions including dermatophytosis, pastern folliculitis, pyoderma, photosensitisation, contact dermatitis and chorioptic mange.  

Typically  hair becomes matted and focal lesions develop into crusts and thick scabs covered by layers of yellow-green pus. When scabs are removed the hair is taken with them and alopecia results. Rain scald commonly affects the dorsum, shoulders and neck. It can however extend to lower portions of the body and abdomen. It typically begins as small rough raised bumps and can go un-noticed in long haired regions. Mud fever looks similar to rain scald but affects the pastern and distal limbs. White legs and white skinned areas are most commonly affected. Grease heel is a disease complex which presens in the same way as rain scald and mud fever but over the heels. It produces a grey exudate which feels greasy to touch. The disease complex can involve dematophilosis as well as a number of other conditions including [[Dermatophytosis| dermatophytosis]], pastern folliculitis, [[Bacterial skin infections - Pathologysuperficial pyoderma|pyoderma]], photosensitisation, contact dermatitis and chorioptic mange.