Clinicopathological findings in cats with haws syndrome.

Haws syndrome occurs in generally healthy cats, with or without diarrhoea, and is characterised by a sympathetic neuropathy causing bilateral third eyelid protrusion and ptosis. Clinical signs are possibly triggered by contagious gastrointestinal pathogen(s) that presumably affect(s) the gut microbiota and influence(s) the gut‒brain axis.