Being in an airplane can make a medical condition worse. If you have certain medical conditions when you’re planning to fly, you should ask your doctor whether you need to reschedule your trip.
If you’ve had abdominal, eye or chest surgery in the last couple of weeks. Gases inside the body expand during a flight, which causes swelling that can be painful and could also interfere with healing of the wound.
If you have a cold or other respiratory infection that is blocking your eustachian tubes. If you really must go on a plane, you should take a decongestant which helps keep the tubes open. Ensure you drink lots of water to counter the dehydrating effects while on the plane.
If you’re wearing a rigid cast. Air can get trapped as your limb swells in the airplane.
I myself had an unpleasant experience on one of my trips way back in 1995. I was still living in the Philippines then, and I went to Hawaii for vacation. I had scheduled a cyst removal on my right breast seven days before my flight. I figured, it was safe to travel after, as it was only an out patient procedure. After my first night in Hawaii, I woke up to a bloody night wear as the cut has opened up. I was nervous and frightened, I had to go to the emergency room of the nearest hospital that morning. What a way to start a 30 day vacation!