[header] How to diagnose conjunctivitis in cats [title] Keep an eye out for the symptoms of conjunctivitis. [step] Although there are many causes of conjunctivitis, the symptoms are largely the same. These include : [substeps] Squinting or blinking: the surface of the eye feels hot and itchy, so the cat may squint or even blink more than usual, or perhaps rub her face along the ground. 
This is one of the most common signs of conjunctivitis in cats. Red eye: a red or bloodshot eye.