Hi sickness,
The rash at the back of your head sounds like it might be psoriasis. I'd get that checked out, since there are treatments for that, and you don't want it to spread.
I also have rosacea, and when it was esp. bad, my Rheumatologist thought I had lupus and ran the test, which was negative every time he ran it. Rosacea is strongly connected to having a pancreas that does not make enough of the fat digesting enzyme lipase. How's your digestion of fats? For me, Rosacea was the first sign of what is now a major problem 23 yrs. later, requiring expensive drugs to digest my food and keep me alive.
The inflammation on the face in Rosacea is ironically due to too much lipase on the facial skin. The lipase breaks down the seborrheac oils that protect the skin, causing it to become thin, dry and irritated, which is why washing with moisturizing soap and luke warm water only and using just your finger pads to move the soap around, twice daily to remove excess lipase is advised, as well as only blotting with a towel....no rubbing. You can rub it and cause a hive, or get those strange looking red papules. The dry conditions cause the Demodex mites that are present on our faces to run rampant. Then there is rhinophyma. I did not get my rosacea dx'd until the end of my nose had tripled in size due to rhinophyma, and it grew unevenly, so my nose now tilts a bit to one side. Luckily, I started out with a very skinny nose, so I don't look like a freak. I assume you are using Metrogel or cream. I have found OTC generic Lamisil (terbinafine HCL) to be even better and a lot cheaper. My doctor says it is safe to use for Rosacea.
I had recurrent red, bumpy, painful rashes on the line down my spine, under my arms and under my breasts for years, until I found out it is Intertrigo, which is a yeast infection on the skin. The spine rash went away when I cut my waist length hair to the shoulders. The wet hair laying on my back for 3 hours while it dried was fertile ground for yeast. I keep the rest of the rash away with Zeasorb Powder after every shower. If I forget even once, it starts up again. Expensive creams just made it wetter, and it needs to be kept dry. Cotton bras also help.
I also had a mysterious rash of tiny bumps on my right lower leg for about 7 years and one day it was gone, just as sudden as it came.
I suspect lowered immunity is the common denominator in a lot of this. Just my opinion.
klutzo