Difference between revisions of "Skin Congenital and Hereditary - Pathology"
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− | + | ===[[Acanthosis Nigricans]]=== | |
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+ | ===[[Alopecia and Hypotrichosis]]=== | ||
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+ | ===[[Collagen Dysplasia]]=== | ||
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+ | ===[[Epidermolysis Bullosa]]=== | ||
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+ | ===[[Epitheliogenesis Imperfecta]]=== | ||
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+ | ===[[Hypertrichosis]]=== | ||
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+ | ===Ichthyosis=== | ||
+ | *Inherited cutaneous disease | ||
+ | *Occurs in dogs and cattle | ||
+ | *Grossly: | ||
+ | **Thickened skin due to [[Skin Glossary - Pathology|hyperkeratosis]] | ||
+ | **May crack resembling fish scales | ||
+ | *Increased adherence of keratocytes preventing normal desquamation | ||
+ | *In cattle occurs in two forms: | ||
+ | **Ichthiosis fetalis - fatal, stillborn calves or die within days of birth | ||
+ | **Ichthiosis congenita - folded and thickened skin, fissures and partial [[Skin Glossary - Pathology|alopecia]] | ||
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+ | [[Category:Integumentary System - Developmental Pathology]] | ||
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+ | ===Porcine Juvenile Pustular Psoriasiform Dermatitis=== | ||
+ | *Also called '''Pityriasis Rosea''' | ||
+ | *Occurs in pigs | ||
+ | *Symmetric lesions on the abdomen, loin and medial thigh | ||
+ | *Start as small [[Skin Glossary - Pathology|papules]] covered by brown [[Skin Glossary - Pathology|crusts]] | ||
+ | *-> lesions join and spread -> umbilicated [[Skin Glossary - Pathology|plaques]] containing white centres with erythematous and scaly borders | ||
+ | *Similar to [[Skin Infectious - Pathology|dermatophytosis]] | ||
+ | *Histologically: | ||
+ | **Epidermal hyperplasia, [[Skin Glossary - Pathology|parakeratosis]], epidermal [[Skin Glossary - Pathology|pustules]] and superficial perivascular dermatitis | ||
+ | *For more detail see [[Porcine Juvenile Pustular Psoriasiform Dermatitis]] | ||
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+ | [[Category:Integumentary System - Developmental Pathology]] | ||
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+ | ===Zinc-related disorders=== | ||
+ | *Occurs in Bullterriers and calves | ||
+ | *Resolves with zinc supplementation in calves but not dogs | ||
+ | *In dogs: | ||
+ | **Fatal acrodermatitis | ||
+ | **Lesions start between digits and on foot pads -> severe interdigital pyoderma -> [[Skin Glossary - Pathology|paronychia]] and [[Skin Glossary - Pathology|hyperkeratosis]] of pads | ||
+ | **May also occur on pinnae, elbows, muzzle, hocks or become generalised with [[Skin Glossary - Pathology|crusting, ulceration]] and secondary pyoderma | ||
+ | **Histologically: | ||
+ | ***Hyperkeratosis and bacterial pustular dermatitis | ||
+ | |||
+ | [[Category:Integumentary System - Developmental Pathology]] |
Revision as of 15:28, 21 February 2011
Acanthosis Nigricans
Alopecia and Hypotrichosis
Collagen Dysplasia
Epidermolysis Bullosa
Epitheliogenesis Imperfecta
Hypertrichosis
Ichthyosis
- Inherited cutaneous disease
- Occurs in dogs and cattle
- Grossly:
- Thickened skin due to hyperkeratosis
- May crack resembling fish scales
- Increased adherence of keratocytes preventing normal desquamation
- In cattle occurs in two forms:
- Ichthiosis fetalis - fatal, stillborn calves or die within days of birth
- Ichthiosis congenita - folded and thickened skin, fissures and partial alopecia
Porcine Juvenile Pustular Psoriasiform Dermatitis
- Also called Pityriasis Rosea
- Occurs in pigs
- Symmetric lesions on the abdomen, loin and medial thigh
- Start as small papules covered by brown crusts
- -> lesions join and spread -> umbilicated plaques containing white centres with erythematous and scaly borders
- Similar to dermatophytosis
- Histologically:
- Epidermal hyperplasia, parakeratosis, epidermal pustules and superficial perivascular dermatitis
- For more detail see Porcine Juvenile Pustular Psoriasiform Dermatitis
- Occurs in Bullterriers and calves
- Resolves with zinc supplementation in calves but not dogs
- In dogs:
- Fatal acrodermatitis
- Lesions start between digits and on foot pads -> severe interdigital pyoderma -> paronychia and hyperkeratosis of pads
- May also occur on pinnae, elbows, muzzle, hocks or become generalised with crusting, ulceration and secondary pyoderma
- Histologically:
- Hyperkeratosis and bacterial pustular dermatitis