Well done, it's nice when people behave considerately and professionally.
In the meantime, I've just gone over givemewings' link to MCS and find I have ~70% of the symptoms. I let it drop because of the stress of moving house at my great age. It really was a difficult time.
Reading in has coincided with a six month wait to see a professor in the Royal Marsden only to find today that they're sending me back to Addenbrooks where I had the bizarrely silly consultation with a $@^$^$%%#&#% consultant. I am very easygoing but she is one of the few professional people I have ever really taken a dislike to.
This allergy problem is so far-reaching and the symptoms so lost in a mist of confusion that I don't suppose I'll ever really resolve it. Not so important at my age.