Keep using heat for 3 days after the boil opens.
If only he had used more light and less heat to make his case.
Try ice for the first 48-72 hours, then use heat after that.
You can use heat for 20 to 30 minutes, 2 or 3 times a day.
Whether you use heat or cold, remove it after 20 to 30 minutes.
Do not use heat, since it can make the pain worse.
Whether you use heat or ice - take it off after about 20 minutes to give your skin a rest.
Should you use ice or heat to treat an injury?
There is no rule about using heat or ice for back pain.
For instance, you may prefer to use heat on your joints rather than cold.