Dermatologist, Steven Johnson’s Syndrome, burning scalp

Patient: About a month ago I was taking 500 mg of Naproxen for inflammation but soon developed severe skin irritations and upper GI problems as well. My question is: Even though it’s been a month since stopping Naproxen, is it possible it’s still in my system and causing severe scalp burn and itch? My hair is falling out in those red and tender places on my head. Also, I developed Steven Johnson’s Syndrome several years ago unknowingly by taking only 3 Bactrim! Maybe my scalp pain is caused by something else?

Symptoms: Severe scalp burning, itching, headache, redness