Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to diagnose and treat blepharitis in cats [title] Look for swelling of the eyelids. [step] When a cat has blepharitis its eyelids will likely swell due to the infection. Look for red and puffy eyelids in one or both of your cat's eyelids.

Ending1: [substeps] Because this infection is bacterial, it can move from one eye to both eyes. However, it may just stay in one. Ending2: Finally, if your cat has an upper eyelid flap, see if there is any red buildup that may be a sign of an infection. Your vet will likely give the eye a flu shot to help it heal. Ending3: The rear lid will also appear red and swollen around one nostril. This is a sign of an infection and should be treated with either over-the-counter drugs or antibiotic treatments. Ending4: [substeps] If your cat shows swelling or swelling of one eyelid, then you may have a fever. The swelling may be sudden and have a red, inflamed appearance as well as yellow or brown spots moving up and down the eyelid.

Answer format: ending1/ending2/ending3/ending4