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The deposition of haem degradation products in the [[:Category:Teeth - Anatomy & Physiology|teeth]] results in red/pink discolouration, hence the name '''pink tooth'''.
 
The deposition of haem degradation products in the [[:Category:Teeth - Anatomy & Physiology|teeth]] results in red/pink discolouration, hence the name '''pink tooth'''.
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The pigment products which are deposited in the skin cause secondary [[Photosensitisation|'''photosensitisation''']].  This manifests as a crusting dermatitis in non-pigmented areas of the skin which are exposed to sunlight. Cattle are often affected over their face, around their eyes and over any white patches of the body.
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The pigment products which are deposited in the skin cause secondary [[Photosensitisation|'''photosensitisation''']].  This manifests as a crusting dermatitis in non-pigmented areas of the skin which are exposed to sunlight. Cattle are often affected over their face, around their eyes and over any white patches of the body.
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Some types of porphyria may cause '''anaemia''' in Siamese cats.
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Some types of porphyria may cause [[Anaemia - Introduction|'''anaemia''']] in Siamese cats.
    
===Differential Diagnoses===
 
===Differential Diagnoses===
Discolouration of single teeth is more likely to be caused by '''pathological processes in the oral cavity''', including tooth root abscesses and pulpitis. '''Fluorosis''' may cause chalky mottling (odontodystrophy) and yellow/brown discolouration of teeth in cattle that are exposed to cement works effluent.
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Discolouration of single teeth is more likely to be caused by '''pathological processes in the oral cavity''', including tooth root abscesses and pulpitis. '''Fluorosis''' may cause chalky mottling (odontodystrophy) and yellow/brown discolouration of teeth in cattle that are exposed to cement works effluent.
    
===Pathology===
 
===Pathology===
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==Treatment==
 
==Treatment==
There is no specific treatment for porphyria. Affected animals should be kept out of sunlight.
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There is no specific treatment for porphyria. Affected animals should be kept out of sunlight.
    
==Prognosis==
 
==Prognosis==
 
Affected animals may suffer from severe burns if they exposed to sunlight but they may otherwise live normally.
 
Affected animals may suffer from severe burns if they exposed to sunlight but they may otherwise live normally.
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==Literature Search==
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[[File:CABI logo.jpg|left|90px]]
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Use these links to find recent scientific publications via CAB Abstracts (log in required unless accessing from a subscribing organisation).
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<br><br><br>
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[http://www.cabdirect.org/search.html?it=any&q1=porphyria&calendarInput=yyyy-mm-dd&occuring1=title&show=all&rowId=1&rowId=2&rowId=3&options1=AND&options2=AND&options3=AND&occuring3=freetext&occuring2=freetext&publishedend=yyyy&la=any&publishedstart=yyyy&fq=sc:%22ve%22&y=8&x=42 (Erythropoietic) Porphyria publications]
    
==References==
 
==References==
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[[Category:Teeth - Developmental Pathology]][[Category:Cattle]][[Category:Cat]][[Category:Pig]]
 
[[Category:Teeth - Developmental Pathology]][[Category:Cattle]][[Category:Cat]][[Category:Pig]]
[[Category:To_Do_-_James]][[Category:To Do - Review]]
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[[Category:To_Do_-_James]][[Category:Expert Review]]
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