Failed to diagnose diabetes and then failed to diagnose gangrene!
I went to gp surgery as a new patient with a blister on my foot that wasn't healing, they prescribed antibiotics and asked me if I was diabetic - I said not as far as I knew but thought it might be worth testing as I'd got what I thought were some symptoms ( thirst, weight loss etc) To which the reply was they'd test when the blister was healed
Blister then went really bad and the district nurses had to come and dress it daily - they kept asking if I was diabetic, I kept saying I'd asked to be tested, they kept telling me that they could do a finger prick test but needed the doctors agreement first
Foot then went black and gp told me that was probably bruising and a sign things were getting better
Then my temp hit 103 degrees and the gp finally did a finger prick test - Bs was 28 by this time
I was then rushed to hospital (now with both gangrene and diabetes ), where I stayed for the next 5 months following surgery to save me from an amputation
Suffice to say I am no longer with the same gp (although I was horrified to learn he's a prominent figure in the local clinical commissioning group!) - even the hospital wouldn't discharge me until I'd changed to a different practice.
Don't even get me started on the nhs complaints process - I gave up when their demand was for proof that the same thing wouldn't have happened even if the gp hadn't screwed up