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<big><center>[[Infectious agents and parasites|'''BACK TO INFECTIOUS AGENTS AND PARASITES''']]</center></big>
<big><center>[[Infectious agents and parasites|'''BACK TO INFECTIOUS AGENTS AND PARASITES''']]</center></big>
<big><center>[[Bacteria|'''BACK TO BACTERIA''']]</center></big>
<big><center>[[Bacteria|'''BACK TO BACTERIA''']]</center></big>
===Overview===
===Overview===
===Exudative epidermitis (greasy pig disease===
===Exudative epidermitis ([[Bacterial skin infections#Greasy pig disease|Pathology]])===
*Worldwide disease of pigs under 3 months of age caused by ''S. hyicus''
*Worldwide disease of pigs under 3 months of age caused by ''S. hyicus''
*Highly contagious
*Highly contagious and persists in the environment for long periods
*''S. hyicus'' produces exfoliative toxin that causes separation of cells in stratum spinosum resulting in rapid intraepidermal spread of organisms
*Similar to “scalded skin syndrome” in human neonates, due to skin infection by exfoliative toxin-producing ''Staphylococcus aureus''
*Excessive sebacious secretion and exudation on surface of skin
*Excessive sebacious secretion and exudation on surface of skin
*Pigs are anorexic, febrile, depressed and have a greasy, non-pruritic dermatitis
*Pigs are anorexic, febrile, depressed and have a greasy, non-pruritic dermatitis
*Acute death in piglets under 3 weeks
*Acute death in piglets under 3 weeks due to dehydration and septicaemia
*20-100% morbidity; up to 90% mortality
*20-100% morbidity; up to 90% mortality
*Organism enters skin via abrasions e.g. bite wounds
*Organism enters skin via abrasions e.g. bite wounds
*Carried in vaginal mucosa and skin of sows
*Carried in vaginal mucosa and skin of sows
*Predisposed by lack of milk, weaning and other infections
*Predisposed by lack of milk, weaning and other infections
*Piglets from non-immune sows are predisposed
*Passive transfer of antibodies from immune sows and development of immunity with age protect against disease
*Isolation from skin lesions
*Isolation from skin lesions
*Early systemic antibiotics amd topical antiseptics/antibiotics useful
*Early systemic antibiotics amd topical antiseptics/antibiotics useful
*Disinfection after outbreak
*Disinfection after outbreak
*Wash sows before farrowing
*Wash sows before farrowing
*Differential diagnosis:
**Mange (''Sarcoptes scabiei var. suis'')
**Swine parakeratosis (zinc and essential fatty acid deficiency)
**Porcine juvenile pustular psoriasiform dermatitis (collarettes or rings typically on the ventrum of young pigs)
**Dermatosis vegetans (associated with a giant cell pneumonia)
**Dermatophytosis (most commonly ''Microsporum nanum'')
===Botryomycosis===
===[[Muscles - inflammatory#Botryomycosis|Botryomycosis]]===
*Chronic, suppurative granulomatous condition
*Chronic, suppurative granulomatous condition
*''S. intermedius'' causes [[Bacterial skin infections#Deep pyoderma|deep pyoderma]], otitis externa, mastitis, endometritis, cystitis, osteomyelitis, wound infections, [[Joints - inflammatory#In Dogs|dyscospondylitis]]
*''S. intermedius'' causes [[Bacterial skin infections#Deep pyoderma|deep pyoderma]], otitis externa, mastitis, endometritis, cystitis, osteomyelitis, wound infections, [[Joints - inflammatory#In Dogs|dyscospondylitis]]
*''S. aureus'' may cause [[Intestines - disease due to pathogens#Staphylococcus|gastroenteritis]]
===Other infections===
**[[Bacterial skin infections#Impetigo|Impetigo]] in cattle and pigs
** [[General Pathology - Oedema#Permeability type|Permeability types of pulmonary oedema]]
**Haemorrhagic disease by [[General Pathology - Haemostasis#Secondary Thrombocytopenic Disease|secondary thrombocytopenic disease]]
**May infect [[Joints - inflammatory#In Sheep|joints of sheep]]; [[Joints - inflammatory#In Pigs|arthritis in pigs]]