I think that my health anxiety spiraling was initially caused or aggravated specifically with doctors fault. I was anxious before, but I didn't rush to the hospital or doctors for every single problem I had. After my dad committed suicide I became even more anxious but I was keeping myself pretty well.
A month after my dad died I developed a bad cough and shortness of breath. My then GP did blood work and CRP - it was not elevated so she refused to get me an xray. Said I was fine and it was all from my anxiety. So the next day I went to university, passed an exam and felt so ill ... I went back home - 4 hours on a train - my lungs were literally on fire, i drank ice cold water and it didn't help. I got hallucinations and honestly I almost died. My mom waited for me in my city, with an ambulance. My temperature was 41C ,and turns out I had pneumonia. Luckily I was prescribed antibiotics and got better. That was the first ding ding ding in my anxious mind that I couldn't trust doctors! Because my CRP is never elevated, nor is my moms. Must be something in our blood.
But I was fine and NO bouts of health anxiety until 2014! I had throat issues and never thought twice about them. Swallowed a Bactrim pill and 10 minutes later my skin was developing big, red, raised, itchy and burning nodules, symmetric. My eyes were swollen and my lips and hard and soft palate were full with blisters and sores, like you get with herpes, just many more and much more painful. Next day I went to ER and they gave me anti allergy system and red nodules ended itching, but other things stayed. I was sure I had allergic reaction because it happened after the pill, literally.
But doctors insisted that I have sarcoidosis! A dreadful autoimmune disease of lungs. They didn't perform tests, just said that I have it because of my symmetric erythema. I refused to stay and check because It was ridiculous. I KNEW it was an allergy and if I stay away from that pill, I am going to be ok. Later I found out (Dr.Google helped me) that what I had was actually Steven Johnson syndrome from antibiotics, really an allergic reaction - severe one. Maybe I had better stayed in hospital because I had those problems with my mouth sores and nodules didn't disappear for MONTHS! Even 2 years later I still had scars left. Steven Johnson syndrome literally is a reaction that causes skin tissue death.
But when I went home, I GOOGLED sarcoidosis and it was the start of my health anxiety. I immediately developed shortness of breath, and other somatic symptoms. I checked myself every day for months scared to find new red rash.
News flash, I did not have sarcoidosis. I really did have allergy and Steven Johnsons syndrome. I had the same allergic reaction a few months ago to another sulfanomide but not that severe. So doctors suggesting I had SARCOIDOSIS was plainly stupid and unprofessional.
So I had two cases of doctors being wrong - first when she didn't diagnose me with what I actually had, second when they diagnosed me with an awful disease I didn't have.
While I understand that these cases served as triggers for my health anxiety because since that SARCOIDOSIS thing I've diagnosed myself with all possible kinds of diseases and I don't trust doctors easily. I only trust it somewhat when they perform scans/tests for specific reasons. Just "opinions" I can't trust, especially from not a specialist, just a GP or internist (one that diagnosed me with Sarcoidosis). So If I have a real or perceived problem I make sure I get all the available tests and go the best specialists of the field. As if THEY say I am fine, then I can believe I am.