Hi I had erythema multiforme , and I was admitted to the hospital for a week. But the actual disease lasted for about 3 weeks . I was treated with multiple pain medications, viscous lidocaine , “ magic” mouth wash, anti inflammatory meds, I also got an iv with nutrients and fluids because I couldn’t eat. Multiple times a day they also treated me with gauze and a prescription type water canister to keep my lips clean and on top of the lidocaine they put Vaseline. And for the rest of my body they gave me a lidocaine ointment . I really hope you’re able to get help I know how excruciating and scary this disease can be .