Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that the white strip of about a cm long where you used to dip tobacco can be due to causes like
Frictional Keratosis that is a harmless overproduction of keratin layer over the mucosa as a protective phenomena to prevent damage to mucosa with the friction and chemicals..
Other cause can he
Leukoplakia that is also over production of Keratin but there is also disturbance in cells known as cell
dysplasia..
It is a Precancerous lesion and needs medical assistance..
Lymph node swelling is generally not seen to be caused due to the
white patch and can be due to either chronic infections or
Lymphoma formation ..
It also needs examination and if there is any doubt FNAC can be advised..
I would suggest you to consult an Oral Physician and get evaluated and a clinical evaluation and investigations like
Biopsy can be done for diagnosis..
In case if it is due to Frictional Keratosis it will get resolved on its own once the tobacco intake is stopped..
In case of Leukoplakia you can be advised Multivitamins and anti oxidants like
Lycopene for atleast 2 to 3 months..
It also gets resolved if tobacco intake is completely stopped..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.