Oral ulcers are not a terminal illness; rather, they are a very common, benign lesion of the oral mucosa that is self-limiting—most lesions heal spontaneously within a short period. Although this condition tends to recur, it is neither life-threatening nor associated with irreversible physical damage. However, if an oral ulcer persists for several months without healing or recurs frequently with extensive involvement, prompt medical evaluation and treatment are essential.

Common oral ulcers are not a precursor to leukemia. Most oral ulcers result from irregular sleep patterns, dietary irritants, or mucosal injury and typically resolve spontaneously. Oral lesions associated with leukemia are secondary manifestations of the disease and differ significantly from common aphthous ulcers. Persistent oral ulcers—especially when accompanied by multiple systemic symptoms—warrant prompt medical evaluation.

The risk of HIV infection during oral ulceration is relatively low—significantly lower than that associated with transmission via blood or sexual contact. Intact oral mucosa provides an effective barrier against viral entry. Although damaged mucosa increases the risk of exposure, specific transmission conditions must still be met. If you have engaged in high-risk contact and experience unusual physical discomfort, seek medical evaluation and HIV testing promptly.

Oral herpes can be managed through various approaches, including dietary adjustments, local oral hygiene, physical soothing measures applied to the affected area, topical pharmacological interventions, and systemic drug therapy. Treatment strategies should be selected based on disease severity to alleviate associated symptoms and accelerate mucosal tissue repair. If persistent high fever or widespread herpes lesions occur, prompt medical evaluation and treatment at a hospital are recommended.

Symptoms of oral herpes include vesicles on the oral mucosa, localized ulceration and pain, oral erythema and swelling, systemic fever and malaise, and difficulty eating or swallowing. If persistent high fever or widespread dissemination of oral herpes lesions occurs, prompt medical evaluation and treatment at a hospital are recommended.

Oral herpes is highly contagious and is caused by infection with the herpes simplex virus (HSV). It can spread through close contact, saliva, or sharing of personal items. There is a risk of transmission throughout the entire course of the illness, with heightened viral activity during the initial phase. Recurrent episodes of oral herpes or worsening of the lesion due to secondary infection require prompt medical evaluation and intervention.

It is not absolutely contraindicated to extract teeth in the evening; however, clinicians typically avoid performing complex extractions during nighttime hours. Medical resources at hospitals are limited at night, and if postoperative complications such as bleeding, swelling, or pain arise unexpectedly, timely and adequate management may be constrained. Simple extractions of loose teeth may be performed in the evening at the clinician’s discretion. However, if significant bleeding or severe pain occurs after tooth extraction, prompt medical attention is required.

Alcohol consumption is strictly prohibited during the active phase of oral ulcers. Alcohol directly irritates the ulcerated lesions, exacerbating congestion and pain, delaying mucosal healing, and weakening the body’s immune function—thereby increasing the risk of recurrence. Additionally, alcohol may interact adversely with certain oral medications. If an ulcer persists for more than two weeks without improvement, prompt medical evaluation and treatment are essential.

It is not recommended to consume garlic during an episode of oral ulcers. Garlic contains irritants that, upon contact with damaged mucosa, can exacerbate the burning pain and delay wound healing. Although cooking reduces garlic’s irritancy, it should still be consumed sparingly. If an ulcer fails to heal over a prolonged period or if the lesion continues to enlarge, prompt medical evaluation is advised.

Watermelon rind cannot truly treat oral ulcers. In some individuals, it may provide only temporary relief from the burning pain at the ulcer site but cannot repair damaged mucosa or eliminate the underlying cause of the condition. It is a folk dietary remedy and should not replace standard medical treatment. If an ulcer fails to show signs of healing after two weeks, prompt medical evaluation is necessary.