I had a Mesenteric Arterial Doppler test done that showed a possibility of MALS. My Cardiologist then did an imaging test of which was initially done incorrectly. They finally confirmed it when it was re-done. I was diagnosed in 2018. I had the doppler test done exactly one year prior and it showed no MALS. I am not too sure how it surfaced aside from two things: 1. I have POTS and 2. I had a chiropractic adjustment done within that year where I was adjusted very differently from the usual "gun" mechanism. During this visit I left feeling very nauseous and my body was extremely sore from within 1 hour of leaving and up until 3 days after. I fell asleep in the car on the way home and slept all day and night. The nausea began instantly after have my mid back area adjusted.) Other than those two items, the syndrome does not run in my family and I have always been pretty healthy until the POTS began in 2015.