Post-treatment skinerythema lasted 3-7 days, edema persisted in 1-2 days, bronzing pigmentation existed in 3-5 days, skin whitening occurred around 7 days after scales shedding of skin.
In more serious cases of erythema, the skin can be left darkened, although not usually permanently.
较严重的红斑病例，皮肤变黑，虽然不是永久的。
3
The November issue of Pediatrics explores a case study involving a 12-year-old boy whose laptop is thought to have caused erythema ab igne, a skin affliction known as "toasted leg syndrome."
美国儿科学（Pediatrics）在11月的出版物发表了关于一个12岁男孩的个案研究，他的笔记本电脑被认为是导致他的热激红斑的元凶，即名为“腿部烧伤症（toasted leg syndrome）”的皮肤病。