COVID-19

COVID-19 is not a single disease in TCM - it is understood as a family of five distinct patterns, each with its own underlying imbalance, symptom profile, and treatment strategy. Two patterns describe the early exterior stage when the epidemic dampness first invades the body. One pattern captures the hot, sticky phlegm that clogs the lungs as the illness deepens. One addresses the severe toxic heat that can overwhelm the system, and one explains the lingering fatigue and dryness that so many people experience during recovery. This means that the heavy, achy, damp presentation needs a different approach than the high-fever, dry-cough variant, and recovery from post-COVID exhaustion requires yet another strategy.

In TCM, COVID-19 is classified as a pestilential disease (温疫, wēn yì) caused by an epidemic dampness pathogen that invades the body from the outside. The primary organs affected are the Lungs and the Spleen. The Lungs govern the body's defensive Qi and control breathing, so when the pathogen attacks, it obstructs the Lung's ability to disperse and descend Qi, leading to cough, chest tightness, and shortness of breath. The Spleen is responsible for transforming and transporting fluids; when overwhelmed by dampness, it cannot do its job, and the result is the heavy, achy fatigue, digestive upset, and thick greasy tongue coating that are the hallmark of this illness.

What makes TCM's understanding so clinically useful is that it tracks how the same pathogen behaves differently depending on a person's constitution and the stage of illness. In some people, the dampness combines with cold, producing chills, body aches, and a white greasy tongue coating - the Damp-Cold pattern. In others, it combines with heat, causing a higher fever, a heavy sensation, and a yellow greasy coating - the Damp-Warmth pattern.

As the illness progresses, the trapped dampness can congeal into phlegm and combine with heat, creating the sticky yellow phlegm and laboured breathing of Phlegm-Heat in the Lungs. In severe cases, the heat turns toxic, leading to the high fever, extreme breathlessness, and dark red tongue of the Toxic-Heat pattern.

This staging also explains why recovery can be so prolonged. The battle against the pathogen consumes the body's Qi and Yin fluids, leaving the Lungs and Spleen weakened. The resulting Qi and Yin Deficiency pattern is what underpins the lingering fatigue, dry cough, night sweats, and brain fog that define post-COVID syndrome. Rather than treating all post-COVID fatigue as a single problem, TCM distinguishes between the person who still has hidden dampness, the person whose Qi has collapsed, and the person whose Yin has been scorched - and treats each accordingly.

Across all patterns, the core strategy of TCM for COVID-19 is to expel the epidemic dampness pathogen while simultaneously protecting and restoring the body's upright Qi. In the early stages, treatment focuses on releasing the exterior and transforming dampness, using aromatic herbs that open the Lungs and awaken the Spleen. As the disease moves deeper, the emphasis shifts to clearing heat, transforming phlegm, and detoxifying the Lungs. In the recovery phase, the priority becomes nourishing Qi and Yin, strengthening the Spleen, and moistening the Lungs to rebuild the terrain so that lingering symptoms resolve and the body is less vulnerable to future illness.

What unites all these approaches is the constant attention to the Spleen. Because dampness is the central pathological factor, every formula - whether for acute damp-cold or post-COVID deficiency - includes herbs that support the Spleen's ability to process fluids. This is why TCM treatment not only addresses the respiratory symptoms but also the profound fatigue and digestive sluggishness that so often accompany this illness.

During the acute phase, herbal formulas are typically taken two to three times daily, and many people notice a reduction in fever, cough, and body aches within 48 to 72 hours. For post-COVID recovery, treatment usually involves a combination of daily herbal medicine and weekly acupuncture sessions. Most patients begin to feel more energetic and mentally clear after two to three weeks, with steady improvement continuing over the following month or two. It is common for progress to come in waves - some days will feel better than others - but the overall trajectory should be upward. Your practitioner will adjust your formula as your tongue and pulse change, ensuring the treatment evolves with you.

The single most important dietary principle during and after COVID-19 is to avoid foods that generate dampness. This means steering clear of dairy products, greasy or fried foods, refined sugar, and excessive raw or cold foods. Instead, focus on warm, cooked, easily digestible meals like rice congee, bone broth, steamed vegetables, and small amounts of lean protein. Ginger tea can be helpful for those with chills and a white tongue coating, while pear or lotus root soup suits those with a dry cough and thirst. Eating small, frequent meals rather than large portions also protects the weakened Spleen and aids recovery.

TCM has been integrated into China's national treatment protocol for COVID-19, and several large-scale observational studies and randomized controlled trials have examined its effects. The 'three medicines and three formulas'-including Jinhua Qinggan granules, Lianhua Qingwen capsules, and Qingfei Paidu decoction-have shown in multiple studies that they can reduce the time to symptom resolution, lower the rate of progression to severe disease, and improve recovery. A 2022 systematic review in Frontiers in Pharmacology concluded that these herbal formulas exhibit antiviral, anti-inflammatory, and immunomodulatory properties.

However, most evidence comes from Chinese populations, and many studies have methodological limitations. International, multi-center RCTs with standardized outcome measures are still needed to confirm these findings in diverse populations. While the existing data are promising, they should be interpreted with appropriate caution.