I did not hear abck from you, so I have prepared an additional response to your question.
Since the nose lesion was biopsied and determined to be actinic keratosis, any worsening of such lesion is very suspicious. However, if you have a pre-existing auto-immune disorder, that can make the possibility of actinic keratosis growing more likely. However, it does not lessen that likelihood of the actinic keratosis been pre-cancerous. Please, this caution is not intended to sadden you, but note that this is a cureable problem if addressed early.
You raised the issue of gum problem from autoimmune problem. Detailed investigation does not support a direct relationship between the two, except that the presence of autoimmune disorder can make your body more sensitive to sunlight, which would in fact cause actinic keratosis to worsen. So, the doctor should even be more aggressive in following your actinic lesion with your history of autoimmune problem.
I trust the you will seek re-evaluation and biopsy as soon as possible. With prompt attention, you will do very well.
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This is information only and should not to substitute for the recommendation of your doctor.