Please choose the correct ending to complete the given sentence: Health: [header] How to treat an infected blister [title] Consider if you should drain the blister. [step] Usually, you should leave an unpopped blister alone to prevent aggravating it and making the infection worse. But, if your blister is on a joint and places pressure on it, you may want to drain it.

Ending1: Redness, swelling, and discomfort are sure signs that a blister has spread. You should reduce pain from your blister to minimal before attempting to use pressure. Ending2: [substeps] See your doctor to see if drain's are safe for you. If you have an unpopped blister, do not drain it with mouthwash and water. Ending3: [substeps] Draining the pus can relieve the pressure and reduce pain. Keep in mind that you'll need to monitor the blister and keep it bandaged and clean after you drain it. Ending4: [substeps] Use a soft cloth soaked in cool water. Place the soaked cloth over the blister and press down firmly enough to stop the drainage.

Answer format: ending1/ending2/ending3/ending4