Changes

If the photosensitisation is secondary (hepatogenous), icterus may be present. Other signs may include those consistent with hepatic encephalopathy such as head-pressing, circling, and behavioural changes.

If the photosensitisation is secondary (hepatogenous), icterus may be present. Other signs may include those consistent with hepatic encephalopathy such as head-pressing, circling, and behavioural changes.

[[Image:Cow-_photosensitivity.jpg‎|right|thumb|125px|<small><center>Photosensitisation in a Friesian cow(Image from Wikimedia Common))</center></small>]]

[[Image:Cow-_photosensitivity.jpg‎|right|thumb|125px|<small><center>Photosensitisation in a Friesian cow(Image from Wikimedia Commons))</center></small>]]

==Diagnosis==

==Diagnosis==