I've got it for past 2 to 3 months fluctuating in severity throughout the n period and throughout each 24 hour period. I've had allergic reaction urticaria to insect repellent once,. Stopped using one brand of repellent and it disappeared.
This time blood tests only show what I knew I had, allergy to dust mite and grass pollen. Doesn't explain this spell of urticaria so my partner thinks stress. I've had a long period of recruitment for a new job. Perhaps this 2 month long process has been more stressful than I recognise. Anyway, if this is the cause then the next few weeks getting used to my job might be the answer to stopping this urticaria outbreak.