Strange medical question: Why would my xiphoid process suddenly stick out?

(Mods: Please move to the applicable forum area).

I understand no medical advice is a substitution for a doctor’s visit, but given the pandemic and the waiting period to get into a new GP (I have no gp) I thought I’d at last ask if anyone knew what could cause this:

I’ve recently become aware that my xiphoid process (the nodule on the bottom of my sternum) seems to point more outward than normal. I’ve also noticed it kind of hurts when I lay on my back flat and stretch.

I have googled it six-ways-from-Sunday and can’t find any applicable information regarding a transforming xiphoid process. Some guy had what they thought was a tumor but it turned out it was from micro injuries caused by using his chest to push wood through a saw or something. I have had no known recent trauma. However, I suffer from heartburn and acid reflux, which sometimes results in profuse vomiting and deep, hard coughing. I don’t recall any recent cases that would have triggered this, but perhaps it could be an accumulative issue.

One thing I know is that when I arch my back it sticks out, even when I have a shirt on, in a way that I’m certain wasn’t the case before. Plus it kind of hurts all the time, more like discomfort.

I have had an issue with tightness/dull aching in my sternum region in general.

Anyone have and clues?

Not a doctor, but that heartburn/acid reflex needs investigating. I had it much more mildly than your symptoms and they found a hiatus hernia - there may be all sorts of other reasons a proper doctor (not Dr. Google) might want to investigate, but it needs seeing to, and the sooner the better, if only for your peace of mind.

Millennia ago, I was tossing my nephew into the air and catching him. Somehow I dislocated the “joint” between the body and the manubrium of my sternum. It was weird, only slightly painfull. When I pressed against the area, it popped back into place.

But, whoever I sneezed it would pop apart again. I learned to push my palm against the area anytime I’d sneeze. This went on for months/a year.

I finally decided to get the problem checked, but didn’t have a PCP. I walked into a crowded ER and got immediate attention when I told them I was their because of chest pain. The doctor explained it was no big deal. It happened on and off for another six months, then stopped occurring.

[Moderating]
The applicable forum area would be IMHO. We ask that all medical and other professional questions go there, as a way of emphasizing that what you’re getting is just the opinion of some random person on the Internet. I’ll move it there, as soon as I find the button.

One of our cats has this. sometimes it sticks out, sometimes it doesn’t. Vet didn’t seem concerned as it doesn’t bother him. But you are not a cat, get it checked out when you can.

My friend experienced this too. I would have it checked out by a doctor.

I had this happen to me, but it wasn’t sudden. I just happened to notice one day, and, concerned it might be a tumor or something serious, I went to the doctor.

He seemed annoyed. He suggested that it was common for overweight people who’ve recently lost weight to be concerned when they first discover their xiphoid process.

I asked further questions, but there wasn’t really anything further he had to offer; he did press on it pretty aggressively and reaffirmed that he was confident that it was my xiphoid I was feeling as opposed to anything medically relevant. Somewhat embarrassing, but I figure doctors answer stupider questions than mine several times a week.

My own suspicion, after reading about the experience of pregnant women, is that my xiphoid process adjusted position when I got fat, explaining why it felt different from what I remembered from my youth.

As for the reflux or whatever it is, I’d definitely get that looked at if possible. I have GERD and it got pretty bad for a while there before we found the right treatment for me.

This is really interesting–I too have recently lost a lot of weight (I’m pushing on losing 50ish lbs…I had lost closer to 60lbs before the quarantine blues set in). I wonder if it’s possible for it to change shape? My concern stems from the fact that I can “pop it” like one can pop their back…seems weird.

I am not sure it “suddenly” is different vs “I suddenly noticed it’s different”…I’m certain it isn’t how it used to be when I was younger or eve a few years ago.

I am also worried it’s nothing/silly and would waste physical space in a real doc’s office during a pandemic, which is why I am asking here, first.

Is that your xiphoid process or are you just happy to see me?

found this (link to reddit)–people seem in unison that indeed being fat pushes it out. Now that I’m not fat anymore it’s all goofy.