I am a 28 year old female, no major health issues as of yet. For the past year or so I have had a recurring rash. In most cases the rash originates from a patch of petechiae (pin ****k red spots, do not blanch with pressure). A day or two after the petechiae show up and spread out, an itchy rash develops. The rash starts as bumps and eventually become a full patch. It may or may not develop fluid filled pockets, and usually ends after a week or two with the rash drying out and becoming scaley.
My current break out started on Feb 5th as a line of petechiae on my upper thigh near my pubic area. By the next day it had doubled in area and I had a few itchy bumps in that area. The next morning it had spread to the point that I had a rash down both inner thighs, up to my navel and around my hips. Dark petechiae spots were mingled in with the rash, with the petechiae extending all the way up to my ribs. I also had patches of rash on my hands, arms, shoulders and back of neck, with no petechiae present.
The petechiae has now spread around to my back and as high as my breasts on my torso. There is no rash in that area.
With these break outs I usually get run down, achey, and battle headaches. I went to see a doctor the week before the rash started because I was absolutely exhausted/sleepy and achey, he ran basic bloodwork to check my thyroid and the only thing that came back abnormal was low vitamin D, and I take a daily vitamin plus a calcium/D combo supplement. When the rash broke out I went in and saw a different doctor that barely examined me and gave me a half-***ed diagnosis of eczema and an offer to send me to a dermatologist if the Rx hydrocortisone doesn't work (otc versions don't even touch this). I called back yesterday and demanded a referral even though I hadn't waited out the week of using the cream as he suggested, I wanted to see someone that would actually look at my issues and not rush me out.
Unfortunately my appointment isn't until mid April, so I made sure to take plenty of pictures since this break out will be long gone by then and who knows if it'll happen again around that time. A lot of my reading has pointed to something auto-immune, and not necessarily eczema. Am I going in the right direction by waiting to see the dermatologist, or should I be seeking a second opinion with another physician? I don't want to waste time and money seeing the dermatologist if he's going to say he can't help me and then send me somewhere else. What kind of conditions would cause petechiae that precedes an itchy rash and spreads over most of your body like that? I've tried googling and only come up with petechiae rash, and nothing that includes an itchy rash with it. I want to research and come to the doctor prepared for my next visit, and so far all I can come up with is Lupus.
Any help is appreciated, and I can provide pictures if that would help.