Extremely deconditioned
I rarely leave the house unless I'm going to appointments and I'm always in bed. I've been so deconditioned to the point where I’m scared I'll never recover from the symptoms I've gained in this state. High heart rate without arrhythmia (sinus tachycardia), muscle fatigue, momentarily blacking out when standing up (even worse when it's too fast), tremors and losing the ability to balance (especially when intentionally trying). This obviously could be more than just deconditioning, but I've not been moving much, so I’m pretty sure this is a huge factor in why.
Recently I've not been able to sweat, despite the warm weather. Everything I read points to an autoimmune disorder, but my agoraphobia makes me scared to have it investigated.
I’m in my 20s ffs, why do I have to be so mentally ill that I’m now getting physical symptoms?