Thanks for asking the query,
Gutkha chewing leads to oral malignancies, leukoplakia
,OSMF this can be confirmed only by clinical evaluation. Stop the habit of chewing gutkha.
I would suggest you to approach an Oral and Maxillofacial Surgeon for clinical examination and evaluation which helps in exact diagnosis and treatment.
Meantime you can do symptomatic treatment at home by maintaining good oral hygiene
to prevent superinfection
, use antiseptic mouthrinse twice daily.
Apply Dologel oral ointment topically over the affected area.
Avoid eating of hot and spicy foodstuffs.
Hope this helps out.