Yes I have this, I went through a lot of medical issues that weren't as bad as they turned out but I had very high anxiety through it all and have had many anxiety related issues for 7 months now. I had almost every test from head to toe and nothing comes back abnormal except anxiety and I believe it is over thinking I had something serious wrong. It started with fluid in my ears and a ringing in my left ear back in April which caused anxiety and loss of sleep. Since thinking I had serious illness that was proved otherwise through an MRI, I started getting a host of really weird things happen, including uncontrolled heart rate which caused more anxiety and then lump in throat feeling which makes me feel like I cannot breathe that started middle of August. I have to make myself believe it is in fact anxiety because every test I have after spending 6k, is normal. I have to believe and trust Jesus He will heal me, pray pray pray and trust!! God bless!