For over a year I have been suffering with a changing rash. Several months before this all started I was stung fifty plus times on each arm by Asian Tiger Mosquitoes. two to three months later the rash broke out on my arms and legs, I had what appeared to be poison which went away and then reappeared. I did have contact with some bushes in the yard a week before the outbreak. After seeing a Dermatologist and given prednisone and a shot, it went away only to be replaced by what appeared to be an extremely itchy form of Dermatographism which later changed into a spontaneously occurring papular dermatitis which I've had for 6 months.I have been on cetirizine for several years for itchy hands and feet, the dermatographism seemed to be connected to the intake of cetirizine and lessened in severity when I changed my allergy pill or stopped all together. I was given rounds of Prednisone, shots, Triamcinolone Acetonide 1% cream which causes periorbital dermatitis. That lead to having to take four weeks of minocycline. I now will have spontaneous eruptions of a red itchy rash with small raised bumps mostly on my torso or arms. My dermatologist did test for scabies twice and it was negative. He also preformed a bunch biopsy which showed and allergic reaction to either food, medication or arthropods. A month ago before going on Minocycline and after the shots had worn off, My itchyness was nearly gone even though I still had the small raised bumps where I had itched before. Now I am having red patches that develop out of nowhere and itch like mad, then disappear only to leave a papular rash. What could this be? I've been to the Dermatologist several times and to an Allergist. No real answers, an allergy test showed that I wasn't allergic to anything. I have stopped using the Triamcinolone Cream two months ago because of the side effects such as periorbital dermatitis.. What are the common causes of a Papular Rash? I am exposed to Dogs and Cats on a daily basis, could this be Toxocariasis? I haven't had a fever but do have a dry cough. The only meds I am on now are Allegra, Zantac and just ending a four week round of Minocycline. If this is possibly from Minocycline, how long does it take for a drug induced rash to go away?