I looked it up, and I may have had an off-shoot of Erythrodermic Psoriasis. According to Healthline:
According to the National Psoriasis Foundation, erythrodermic psoriasis is the rarest form of psoriasis, and it is very serious (NPF, 2012). This form of psoriasis looks like severe burns to the skin. It may cover large portions of the body, and exfoliation often occurs in larger pieces than the small scales typical to most psoriasis. It is very painful and may require hospitalization.
Erythrodermic psoriasis can occur with pustular psoriasis or develop from widespread, poorly controlled plaque psoriasis. It can also be caused by a bad sunburn, infection, alcoholism, significant stress, or abrupt discontinuation of a systemic psoriasis medicine.
The picture it showed looked like the lovely version of it, mine looked 10x worse. The Dermatologist who I ended up seeing took a shitload of pictures of me, and asked if he could write a medical paper on me, I obliged but told him not to show my face, or use my name. If I want to be "famous", it won't be for that.
He was surprised it only lasted a little over a year. His last case of it in the early to mid 1980s, the guy had it for more than 10 years.
He said it's difficult to study the disease since it's extremely rare.