When persistent coughing disrupts sleep patterns and triggers palpitations, the body is signaling a deeper imbalance. From Traditional Chinese Medicine (TCM) perspective, this aligns with "heart fire hyperactivity"—a state where yang energy overwhelms yin, manifesting as dry throat, restless sleep, and erratic pulse. Modern cardiology reveals similar correlations: viral infections like influenza can elevate oxidative stress, disrupting autonomic nervous system regulation and causing sympathetic overdrive. This dual pathology explains why flu-induced coughs often persist longer than common cold symptoms, accompanied by metabolic inefficiency and circadian rhythm disturbances.

TCM diagnostics emphasize "tongue coating" and "pulse quality" as key indicators. A thin yellow coating with rapid pulse suggests internal heat accumulation, while pale tongue with weak pulse reveals underlying yin deficiency. Modern medicine complements this through C-reactive protein testing and heart rate variability (HRV) analysis—elevated CRP indicates systemic inflammation, while reduced HRV signals autonomic dysfunction. For prevention, TCM recommends cooling herbs like chrysanthemum and honeysuckle to clear heart fire, paired with Western strategies such as vitamin C supplementation and omega-3 intake to reduce vascular inflammation. Practical daily measures include sipping warm pear juice with rock sugar (TCM yin nourishment) and practicing 4-7-8 breathing exercises before bed (modern vagus nerve stimulation). When coughing disrupts breathing rhythms, combine TCM's "stop-cough acupressure" (pressing Tiantu CV22) with Western saline nasal irrigation to soothe irritated airways.