Mouth ulcers can occur in various areas within the oral mucosa, such as the gums, tongue, lips, cheeks, etc. Only oral ulcers that occur in the gums will have gingival manifestations. It usually presents as a yellowish surface with a central depression and red edges, accompanied by painful symptoms. Ulcers are classified as mild, moderate or severe, depending on the size and depth of the ulcer. In general the more severe the degree, the larger and deeper the ulcer and the more pronounced the pain. Treatment for mouth ulcers can be done by spraying watermelon cream on the affected area or gargling with Rejuvenate to promote healing. Take vitamin supplements, such as vitamin B2 and vitamin C. Drink more water, maintain oral hygiene habits and do not eat spicy foods to minimize the occurrence of ulcers and reduce the symptoms of ulcers.