What could cause excess cortisol in the saliva and swollen parotid gland?

Cushings Disease: There are many conditions that can be related to the question you are asking. It is best to see your internist for a thorough evaluation and diagnosis. For more information regarding cushings syndrome you might check - neurosurgery.Stanford.Edu/pituitary/cushings_syndrome.Html and for salivary cortisol see: macses.Ucsf.Edu/research/allostatic/pdf/faqs-salivcort.Pdf.