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Table 1 Proposed photosensitisation clinical grading system. Lesions were defined as being mild, moderate or severe if having a composite score of <7, <12 or ≥12 respectively

From: Acute-onset high-morbidity primary photosensitisation in sheep associated with consumption of the Casbah and Mauro cultivars of the pasture legume Biserrula

Score

Lesion description

 

Face and muzzle

Eyes

Ears

Fleece/body

0

No apparent lesions

No apparent lesions

No apparent lesions

No apparent lesions

1

Mild cutaneous oedema and erythema

Mild serous blepharitis

Drooping of ears with mild oedema.

Mild erythema of exposed areas.

2

Cutaneous oedema and erythema; mild to mderate aural and facial oedema

Serous exudation, mild to moderate perorbital oedema and conjunctival erythema

Mild aural pitting oedema

Marked erythema of exposed areas.

3

Severe cutaneous erythema, crusting and black discolouration; moderate aural and facial oedema

Serous exudation, possible crusting; marked palpebral and conjunctival erythema and oedema; mild to moderate periorbital oedema

Marked aural pitting oedema, curling of ear ends, some flaking or other lesions possible

Multifocal, possibly multifocally extensive, patchy fleece loss, erythema of underlying skin.

4

Severe cutaneous erythema, crusting and black discolouration; severe aural and facial oedema

Severe perorbital, palpebral and conjunctival oedema. Possible corneal opacity or ulceration or opacity, serous exudate, eyelid crusting

Marked aural pitting oedema, curling of ear ends, other dermal lesions present. Skin flaking and multifocal necrosis; some tissue loss from rubbing may be evident; moderate serous exudation

Marked focal or multifocal fleece loss and dermatitis of exposed skin.

5

Multifocal irregularly shaped cutaneous necrosis and exudation; severe dermatitis including secondary lesions; severe facial oedema

Severe periorbital, palpebral and conjunctival oedema; eyes closed; corneal ulceration and/or opacity

Marked aural pitting oedema, curling of ear ends and tissue loss, other dermal lesions present including flaking and multifocal necrosis; abundant serous exudation

Widespread fleece loss, severe dermatitis of exposed skin. Significant fleece loss in dorsum and flanks.