Salt craving is a compelling or extreme desire to consume salt or salty foods. Craving for salt results from a decrease in sodium in the body either from inability to retain salt or the excess loss of sodium from the body. Depending on the cause, your salt craving may last only as long as it takes to rehydrate following mild dehydration from heavy sweating. It may also be a permanent symptom, as is found with Addison’s disease, and may be accompanied by other symptoms or signs including low blood pressure (hypotension), fatigue, loss of appetite, and chronic diarrhea.