Changes

*Waxing and waning neurological signs due to [[Hepatic Encephalopathy|hepatic encephalopathy]].  These are usually most severe an hour or two post prandial but this may not be obvious in all cases

*Waxing and waning neurological signs due to [[Hepatic Encephalopathy|hepatic encephalopathy]].  These are usually most severe an hour or two post prandial but this may not be obvious in all cases

**Bizarre behaviour

**Bizarre behaviour

**Head pressing

**[[Forebrain Disease - Pathology #Circling, Head Pressing, Compulsive Walking|Head pressing]]

**Seizures

**[[Forebrain Disease - Pathology #Seizures|Seizures]]

**Intermittent blindness.   

**Intermittent blindness.   

*Ptyalism in cats

*Ptyalism in cats

*Dysuria, stranguria, haematuria, pollakiuria and urethral obstruction

*Dysuria, stranguria, haematuria, pollakiuria and urethral obstruction

**An increase in ammonium concentration in the blood decreases the ability of enzymes to convert uric acid to allantoin, thereby resulting in urate urolithiasis.

**An increase in ammonium concentration in the blood decreases the ability of enzymes to convert [[Urate Metabolism - Pathology|uric acid]] to allantoin, thereby resulting in urate urolithiasis.

*Intermittent vomiting or diarrhoea

*Intermittent [[Stomach and Abomasum Consequences of Gastric Disease - Pathology|vomiting]] or [[Intestine Diarrhoea - Pathology|diarrhoea]]

===Laboratory Tests===

===Laboratory Tests===