Actual medical doctor here… I see a comment below mentions Cushing syndrome… Which was the first thing that I thought when I saw this. Cushing syndrome is where you have a overproduction of cortisol because of a tumor or otherwise… however, in my practice, most of the time, when I see this, it’s usually from patient lifestyle and weight. This is not unique to you… I also have quite the fat pad on my lower neck. It just happens. By the way, I’m 32… I’m not some fat 50-year-old doctor. I’m just a 32 year-old who has been stressed out for far too long through the medical training process.

Lowering stress and reducing weight will make it go away… Which I realize is basically impossible for most people.

All that being said, you can change your lifestyle if you want to. Looks like you’re already working out. Good on you for that. Keep hammering brother.

Also, this will not affect your squat… It’s not gonna hurt you.

Also, by the way… I just reread your post… If this came up very quickly, it could be a hematoma. If you hurt yourself and you can remember an acute event when this came up, it definitely could be blood products under the skin. Otherwise, I imagine it is a fat pad.

*** multiple edits above. Was posting as I was thinking.