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Is there any redness or watering from the eyes?
Apart from allergy one needs to rule out a possibility of viral cause such as herpes simplex as it is known to cause viral conjunctivitis and skin lesions.
Do you have anything else to ask in this regard?
no redness or watering of eyes I don't have skin lesions just a small red rash.
Well with no ocular symptoms itmay not be viral conjunctivitis but looks like the small rash in the mouth could even be an aphthous ulcer.
If so what what would you do/
Treatment of an aphthous ulcer is in the form of use of mouth wash, local application of anesthetic ointment, analgesics, avoid spicy food.
If there is nothing more to ask then thank you and best wishes.If you are satisfied with the answer , please press the accept button so that I get my dues.A bonus and/or positive feedback are welcome.Views expressed are for information purpose only and cannot substitute a visit to an ophthalmologist