Dry eyes and mouth in diabetes may have multiple causes(drugs, nerve damage, poor diabetes control etc). There may also me non-diabetes related causes, like obstructive sleep apnoea with snoring and mouth breathing at night causing a dry mouth. There may be other autoimmune conditions as a cause. Treatment would depend on the likely cause. It is not within the scope of this forum to make a diagnosis and treatment plan. You would need to see your doctor for a formal diagnosis and management plan. For the dry eyes, you could try some form of 'natural tears' available from the pharmacy until you get to see your doctor
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