This morning it looked as if the "ring" was fading. The redness round the edges had gone and it looked as though the skin might heal.
I wondered why it had suddenly healed. Perhaps it was the swine flu virus or the effect of fighting an infection in the teeth.
The best guess is that it was caused by blue cheese, as I ran out of Stilton in the middle of last week and had been eating it almost daily up to then. I had followed through the links on the subject, erythema annulare centrifugum and found a very detailed text book page. This would appear to summarise all the reports on this problem and there would appear to be limited links with salilcylate allergy or montelukast. There is however an established link with blue cheese. The site states that blue cheese causes a problem because of the fungus Penicillium. And a list of the drugs that causes the problem includes salicylates and penicillin.
Today, by coincidence, I finally went to the dentist. A series of sharp pains last week ended up in a dull ache in my lower back jaw. I used warm salty water and this seemed to clear the inflammation of the gums but it failed to remove the dull ache.Wisdom tooth, I thought.
My National Health Service dentist has gone private - so the bill for the day was not small. The dentist x-rayed me, removed a wisdom tooth from my upper jaw and gave me a deep clean. The pain, she blamed on food trapped in the gums causing an infection. She then gave me a prescription of antibiotics. I couldn't say I was allergic to penicillin. The thought had hardly crossed my mind - so I told her penicillin was okay.
The dentist, by the way, accepted I could not find a safe toothpaste or mouthwash. Otherwise, I think, she would have tried to treat the infection with mouthwash.
I also got my fresh prescription of montelukast. It's been that kind of day.
Tonight the ring is again inflamed. I think I'll have to put up with it for three days and hope it does not spread any more. If it does we'll have to add penicillin to everything else. And do without blue cheese, groan.