Dear, Welcome to HCM. Understanding your concern. As per your query you have scorched tongue , tender lips , cough and acidity feeling . Well the symptoms you mention in query are pointing towards a condition known as acidic reflux . In this condition the acidic content of stomach come upwards due to dysfunction of upper sphincter of esophagus . I would suggest you to avoid eating spicy and heavy food specially at night , eat at least one hour before going to bed , take light walk after every meal and start taking antacid like gelusil. Consult gastroenterologist for proper examination . Doctor may order certain test to find out exact cause and rule out condition like herpetic stomatitis and sore throat . Doctor may prescribe proton pump inhibitor and H2 blockers . Doctor may also refer you to oral pathologist . Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari