The presence and severity of oral mucositis may be determined by clinician-based scoring or by patient-reported outcomes.

There are three major reasons to assess mucositis severity:

• to determine the stomatotoxicity of a particular cancer-treatment regimen
• to help in the management of the patient
• to evaluate the efficacy of a potential mucositis intervention.

Most Common Clinician-based Evaluation Scales:

The best known and currently most used scales for Oral Mucositis are:

• World Health Organization (WHO) Handbook for reporting results of cancer treatment (1979)
• National Cancer Institute - Common Terminology Criteria for Adverse Events (CTCAE)
• Radiation Therapy Oncology Group (RTOG) Criteria
• The Oral Mucositis Assessment Scale (OMAS).