Diagnosed myself with sleep apnea. Kept telling drs it wasn't anxiety. After 10 years got one to order a sleep study by demanding one.
Celiacs. Told it was IBS and mental. Told to eat more grain for fiber. Finally developed peripheral neuropathy from B-12 deficiency. I was referred to a neurologist and I told her after all the test and only found very low B-12 I thought I had celiacs. She referred me to gastroenterologist for biospy of villus. I'm then 40, celiacs from childhood, never enough B-12.
Fibromyalgia Known I had it for decades. Flaired bad in 2020. PCM told me it was arthritis. She referred me to Occupational Health. After testing he said it clearly wasn't arthritis. I told him I thought I had mild fibro for 15 years that has flaired to border-line severe and already have one diagnostical confirmed autoimmune disease. He referred me to a rheumatologist who diagnosed fibro.
Narcolepsy type 2 without cataplexy. Excessive daytime sleepiness not resolved by CPAP so severe I would pull into parking lots or lay under a desk. Prevented me from finishing grad school. After 5 sleep drs for apnea over 25 years one finally prescribed me armodafinil.