You can't possibly self diagnose leukemia and it is probably not that
High ANA is suggestive of autoimmune disease as possible ...
Your mouth may be due to apthous ulcers ..
Skin lesions might be related to a form of lupus or other autoimmune disease
You need medical evaluation
Evaluation of the skin and oral symptoms and findings are needed ....
I suspect further blood testing to be needed to do more complete work up for you
I hope that this information is helpful for you
Let me know if you have further questions or concerns
I will be happy to get back with you
If my answer has been helpful and to your satisfaction then please remember to leave positive feedback
Thank you and Best Regards,
Anthony Bray MD