Facial swelling/edema - persistent. What could it be?

Hey everyone, I'm a 21yo male and have been experiencing facial swelling/edema for at least 5 years (since 16yo). It's been getting worse since the spring and has been genuinely distressing. Complete puffing up of jaw, nose, cheeks, affects one eye.

I have a diagnosed developmental stutter, chronic migraines, mixed rhinitis, asthma, and hypermobility spectrum disorder.

I'm on Acarizax dust mite immunotherapy, Aimovig 140mg, an anti-histamine (bilastine), two psychotropic meds (duloxetine, quetiapine), montelukast, Relvar inhaler, and Ryaltris nasal spray.

My allergist couldn't find an allergic or sinus-related cause for it. Rheumatologist dismissed it after my previous mental health issues came up. Neurologist thought the swelling would be solved with Aimovig (as it is a CGRP receptor antagonist, and CGRP is a vasodilator), but now he's stumped too.

Does anyone have any similar experiences or any idea what to do here? I've been recommended to go back to square one and see my PCP (or GP as we call it here) - but he's generally stumped when it comes to my health problems too. I feel like there's got to be other options, some other specialist I can see.