Sorry for the late response as I was away. I will now be online for a few hours now from the time that you receive my message.
It is not so uncommon for people to develop allergies to various things like what you have experienced, later in life.
One can, in fact, become allergic to things that they have been using for a long period of time.
The exact cause of why this happens is not known.
The best thing to do, obviously is to avoid things that you recognise that you are allergic to.
If symptoms are severe then you will require medications to help suppress your allergies like antihistamines, topical steroids and so forth.
This session is open for any further questions that you may have.
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