About three months ago, I woke up with a slight red rash on both wrists. Over the course of the next few weeks, the rash progressed to cover the back of both of my hands but not extending far up the digits. It became deep red, dry, and tight, with little cuts around my knuckles. During this time, I felt particularly unwell and feverish (though I wasn't monitoring my temperature at the time). Though the fever and malaise eventually improved, the rash persisted and worsened. My doctor looked at the rash and believed it to be scabies--though I was not itchy--and prescribed me permethrin and ivermectin. The permethrin--and any cream--burned when I applied it to the rash, but within a few days the rash had indeed improved but not completely resolved. Gradually it began to get worse again, so I retreated with the permethrin, with similar results until the rash began to worsen once again. I went to the dermatologist a couple weeks ago, who diagnosed it as nonspecific dermatitis and prescribed a topical steroid. He did not believe it to be scabies and did not even think it worth it to do a skin scraping. (Side note: a friend with whom I had shared a bed was diagnosed with scabies around the same time.)
The rash has not gotten nearly as bad as it was in February, but that may be because of the topical I've been using. The fever and malaise comes back in waves, though--a few days on and a few days off. I've been monitoring my temperature over the last 10 days or so, and it's gotten as high as 100.1, but it's usually in a range of 99.1-99.9 when feverish. Other days I have no fever at all and feel fine -- except for the anxiety of not knowing what's wrong with me.
I'm 29 and in otherwise good health -- I had barely seen a doctor in years until recently. I've had 2 CBCs and 2 full ranges of STD tests in the last 2 months. Everything came back perfectly normal, except for slightly elevated bilirubin on both tests (1.6 and 1.3).
As a prelude, I had a week or two in December (a month prior to the rash first appearing) where I was feverish, fatigued, and generally feeling unwell. Not sure if this is related.
I can't help but believe the fever, malaise, and rash are somehow related, but no one has seemed to figure it out. Any ideas?