Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to diagnose and treat hyperesthesia syndrome in cats [title] Monitor for episodes of abnormal movement. [step] Symptoms of feline hyperesthesia occur in short episodes of abnormal behavior. The cat will be doing something normal, like sleeping, sitting, or walking, and then suddenly they will start moving in a repeated, twitching way.

Ending1: These episodes will usually develop within a few days of the cat being an adult and are usually not painful. Watch out for these changes in behavior because they can still be life-threatening. Ending2: [substeps] There may be isolated instances of behavior that coincides with hyperesthesia. For example, if a cat is feeling lethargic with no food, suddenly develops urination, or acts tired and stiff, it may be experiencing hyperesthesia. Ending3: These episodes generally last from around 10 seconds to a few minutes. [substeps] After the episode is over, the cat will go back to the normal behavior they were doing before. Ending4: These episodes can last for hours or indefinitely. There is no definitive diagnosis and there is no evidence to suggest that it is actually caused by hyperesthesia.

Answer format: ending1/ending2/ending3/ending4