You are likely experiencing Oral Submucous Fibrosis (OSMF), a progressive condition caused by pan masala and tobacco that stiffens the oral tissues. The most crucial first step is to completely stop using these products. You must consult a dentist or oral specialist immediately for a proper evaluation. Treatment typically involves prescription therapies, including antioxidant supplements (like Lycopene), multivitamins, and localized corticosteroid injections to reduce stiffness, alongside daily mouth-stretching exercises. Because OSMF is a precancerous condition, prompt medical intervention is vital to manage it and prevent further complications.