@kritzkarn Oh my goodness!! I don't know how she is functioning!! Applause to her for pressing on!! I'm 71 and have had some of these symptoms.. and I'm just soo sorry to hear about someone so young and so brave going thru all of this..for nausea I take Zofran (and promethezine..sedating..so not so good for her) I do Plant based Vanilla Ensure as I am sensitive?intolerant to milk protein (did the MRT food sensitivity test and 4 months of the food reintroduction..that was really tough) ..I had a normal gastric emptying.. but one GI found my stomach is shaped in a "J".. so I eat a little 4-6 times a day..I went from 147 to 99 lbs.. but have gained too much back.. this has been going on for over 5 years.. stared with an antibiotic which blew a hemorrhage in my stomach...had my gallbladder out.. was diagnosed with pyloric stenosis lower part of stomach.. had ear wax removed.. had MRI for Vargus nerve/normal.. I hope some of this gives you al some ideas as to what else you can check..my grand niece about your daughter's age had the weight loss and nausea and throwing up.. they removed a cycist off one of her ovaries..that helped..I also had rashes on my hands and ..all over from mold.. the doctor thought I had the flu and gave me penicillin and it's "mold" and I was allergic to it.. was on steroids for 2 years about 20 years ago.. I was diagnosed with a tortous colon too.. and positive for scleroderma/systemic SCL70 pos.. but God healed me of alot of this stuff..still standing for complete healing.. but I pray healing scriptures daily..and never give up!! Your daughter sound like and outstanding amazing young lady!! Prayers for both of you!!