Changes

*May involve a foreign bodey reaction to follicular contents and draining sinuses develop

*May involve a foreign bodey reaction to follicular contents and draining sinuses develop

*If chronic, scarring and loss of adnexa

*If chronic, scarring and loss of adnexa

*Bacteria often isolated include [[:Category:Staphylococcus species|''Staphylococcus'' spp.]], especially ''S. intermedius'' in dogs, [[Streptococci|''Streptococcus'' spp.]], ''[[Corynebacterium pseudotuberculosis]]'', [[:Category:Pseudomonas and Burkholderia species|''Pseudomonas'']], [[:Category:Pasteurella and Mannheimia species|''Pasteurella'']], [[Proteus|''Proteus'']], [[Escherichia coli|''E.coli'']]

*Bacteria often isolated include [[:Category:Staphylococcus species|''Staphylococcus'' spp.]], especially ''S. intermedius'' in dogs, [[:Category:Streptococcus species|''Streptococcus'' spp.]], ''[[Corynebacterium pseudotuberculosis]]'', [[:Category:Pseudomonas and Burkholderia species|''Pseudomonas'']], [[:Category:Pasteurella and Mannheimia species|''Pasteurella'']], [[Proteus|''Proteus'']], [[Escherichia coli|''E.coli'']]

====Staphylococcal folliculitis and furunculosis====

====Staphylococcal folliculitis and furunculosis====

*Surrounding wall of collagen and fibroblasts may develop

*Surrounding wall of collagen and fibroblasts may develop

*Common bacteria (often normal mouth flora)

*Common bacteria (often normal mouth flora)

**[[Pasteurella multocida|''Pasteurella multocida'']], [[Fusobacterium|''Fusobacterium'' spp.]], [[Streptococci|beta - haemolytic streptococci]], [[Bacteroides|''Bacteroides'']]

**[[Pasteurella multocida|''Pasteurella multocida'']], [[Fusobacterium|''Fusobacterium'' spp.]], [[:Category:Streptococcus species|beta - haemolytic streptococci]], [[Bacteroides|''Bacteroides'']]

====Bacterial granulomatous dermatitis====

====Bacterial granulomatous dermatitis====

*[[Clostridium novyi|''Clostridium novyi'']]

*[[Clostridium novyi|''Clostridium novyi'']]

**Severe cellulitis, toxaemia and death of young rams during breeding season (due to traumatised heads) - 'big head'

**Severe cellulitis, toxaemia and death of young rams during breeding season (due to traumatised heads) - 'big head'

*[[Streptococci|''Streptococcus equi'']]

*[[Streptococcus equi subsp. equi|''Streptococcus equi'']]

**In horses

**In horses

**Immune complex vasculitis -> [[Haemorrhage - Pathology#Purpura haemorrhagica|purpura]]

**Immune complex vasculitis -> [[Haemorrhage - Pathology#Purpura haemorrhagica|purpura]]