What might cause Swollen glands and mouth sores?

Swollen glands and mouth sores can be caused by several factors, including viral infections like herpes simplex or cytomegalovirus, bacterial infections such as strep throat, or autoimmune conditions like lupus. Allergies or irritants, such as certain medications or oral hygiene products, may also lead to these symptoms. Additionally, systemic conditions like HIV/AIDS or certain cancers can manifest with swollen glands and mouth sores. If these symptoms persist, it's important to consult a healthcare professional for proper diagnosis and treatment.