I have not been given an official diagnosis of EN, after multiple labs including chest X-ray, ct scan, ultrasounds and all blood work. My doctor pretty much said “no more tests needed”. I continue to have flare ups of painful nodules on arms, legs, belly and upper back. Your connection to possible supplements or vitamins caught my attention. These nodules began for me exactly 3 years ago at the beginning of the Covid pandemic, which is when I began using vitamin d, c and zinc with magnesium. I also began using probiotics. I have also considered the correlation. Also considered that I had a severe case of influenza B one year prior and was prescribed multiple antibiotics for secondary infections. Some antibiotics caused such severe stomach pains I had to stop using them. Is it possible it was the antibiotics? I wish I could figure out what triggered this, I am tired of continually dreading a flare up!