A disease involving the saliva-secreting gland. The disease is salivary gland disorder (Monarch Disease Ontology id MONDO_0001142). Also known as: disease of saliva-secreting gland, disease or disorder of saliva-secreting gland, disorder of saliva-secreting gland, saliva-secreting gland disease, saliva-secreting gland disease or disorder, salivary gland disease.