Sometimes physicians encounter symptoms that remain unexplained despite extensive testing. When no clear medical explanation is found and symptoms persist, patients often develop anxiety and/or depression as a consequence of living with an unresolved health problem. In such situations, treatment frequently focuses on the emotional consequences while the underlying medical mystery remains unsolved. Yet occasionally, the right question can reveal a surprisingly simple explanation—and an equally simple solution. Case study: A chronic cough Linda was 54 years old when she came to see me with a persistent dry cough that had lasted 14 months. The cough was relatively mild during the day but became relentless at night. She described a constant tickling sensation in her throat. Coughing would briefly relieve the sensation, but within seconds, the tickle would return, triggering another coughing spell. She tried drinking cold water, warm water, and various home remedies, but nothing provided lasting relief. The chronic cough disrupted her sleep night after night, leaving her exhausted during the day. As the months passed, Linda became increasingly anxious and depressed. Apart …