The main reasons for repeatedly getting mouth ulcers include biting the inside of the cheek, irritation from dentures, braces, rough fillings or sharp teeth, mouth injuries like cuts or burns, and stress or anxiety. Other contributing factors can be vitamin B12 or iron deficiency, hormonal changes (such as during pregnancy or menstruation), certain medicines (like anti-inflammatories or beta blockers), food sensitivities or allergies, and underlying health conditions such as inflammatory bowel disease, coeliac disease, Behçet's disease, or autoimmune disorders. Recurring mouth ulcers might also relate to a weakened immune system or genetic predisposition. If mouth ulcers keep returning frequently, it is advisable to seek medical evaluation to check for any underlying causes and appropriate treatment options. Simple home treatments like rinsing the mouth with warm salt water and avoiding irritating foods can help manage symptoms, but persistent cases require professional care.
