In simple words: Necrotizing ulcerative stomatitis (NUS) is a rare but serious mouth infection that causes painful sores and tissue damage. It's more common in people with poor nutrition or weakened immune systems. Treatment usually involves cleaning the affected areas, antibiotics, and pain relief.

Necrotizing ulcerative stomatitis (NUS), also known as cancrum oris, is a severe infection of the mouth characterized by painful ulcers, necrosis (tissue death), and inflammation, which can extend to the underlying bone and connective tissue. Risk factors include poor oral hygiene, malnutrition, immunosuppression, and smoking. Symptoms include difficulty eating, foul breath, fever, and swollen lymph nodes. Diagnosis is based on clinical presentation, patient history, and potentially oral swabs or X-rays. Treatment focuses on debridement, antibiotics, and pain management.

Example 1: A malnourished child living in an area with poor sanitation presents with painful mouth sores, foul breath, and fever. Upon examination, necrotic ulcers are observed in the oral cavity, consistent with NUS., An immunocompromised adult patient receiving chemotherapy develops painful ulcers and gingival inflammation.Diagnosis of NUS is made based on clinical findings and confirmed by oral swab testing., A smoker with a history of poor oral hygiene experiences progressive gum pain and bleeding, eventually developing necrotic ulcers.NUS is diagnosed, and treatment is initiated with debridement and antibiotics.

Documentation should include detailed descriptions of the lesions (size, location, appearance), symptoms (pain, fever, difficulty eating), patient history (malnutrition, immunosuppression, smoking), diagnostic tests (oral swabs, X-rays), and treatment procedures (debridement, antibiotics).