Every practitioner has cases they would rather forget. This is one of mine.
Mr. Liu was 45 years old — a middle school teacher who came to me complaining of chronic lower back pain, tinnitus, and night sweats. He had seen several doctors before me, both Western and Chinese. The Western doctors found nothing structurally wrong with his back. A previous TCM practitioner had diagnosed kidney yin deficiency and prescribed Liu Wei Di Huang Wan (Six-Ingredient Pill with Rehmannia) for two months, which helped somewhat with the night sweats but did nothing for the back pain.
When I saw him, I agreed with the previous diagnosis — at least superficially. His tongue was red with little coating. His pulse was thin and rapid. He had a dry mouth, especially at night. The night sweats, tinnitus, and back pain together pointed clearly toward kidney yin deficiency.
So I did what seemed logical at the time: I doubled down on the kidney tonification approach. I prescribed a stronger version of the yin-nourishing formula, adding Gui Ban (Tortoise Shell) and Bie Jia (Soft-shelled Turtle Shell) for heavier yin tonification, along with Zhi Mu (Anemarrhena) and Huang Bai (Phellodendron) to drain deficient heat.
After one week on the formula, Mr. Liu called me. He felt worse. His back pain had not improved — in fact, it had intensified. But more concerning were the new symptoms: his digestion had completely collapsed. He had no appetite. He felt bloated and nauseous after eating anything. His stools had become loose and watery. He was more tired than before.
I asked him to come in immediately. When I re-examined him, I noticed something I had missed during the first visit: while the tongue body was indeed red, the edges were marked with distinct teeth impressions (ya hen), and there was a thin layer of greasy coating in the center. His pulse, while thin and rapid at the deep level, also had a slippery quality at the superficial level that I had initially dismissed.
The truth was that Mr. Liu had not just kidney yin deficiency. He had a dual condition: kidney yin deficiency overlaid on spleen qi deficiency with dampness. The red tongue and night sweats were real. But the spleen deficiency and dampness were equally real — and I had completely missed them.
“When treating deficiency, first strengthen the spleen. If the spleen is not functioning, no tonification will succeed.” — Li Dongyuan, Pi Wei Lun
By prescribing heavy, cloying yin-nourishing herbs to a patient with an already weakened spleen, I had essentially poured cement into a clogged drain. The herbs could not be properly transformed and transported. Instead of nourishing kidney yin, they accumulated as dampness in the middle jiao, further impairing digestion and creating new symptoms.
I immediately stopped the yin-tonifying formula and switched to a completely different strategy. The priority was no longer tonifying the kidney — it was rescuing the spleen.
The new prescription was based on Xiang Sha Liu Jun Zi Tang (Six Gentlemen Decoction with Aucklandia and Cardamom):
This formula addresses the spleen deficiency and dampness directly. Sha Ren and Mu Xiang are aromatic herbs that promote the movement of qi in the middle jiao and help resolve the damp-turbidity caused by the previous heavy tonification. Chen Pi and Ban Xia dry dampness and regulate qi.
After two weeks on this formula, Mr. Liu’s digestion returned to normal. His appetite improved. The bloating and loose stools resolved. He felt more energetic.
Only then — with the spleen functioning again — did I reintroduce a very gentle kidney-tonifying approach. Instead of the heavy Gui Ban and Bie Jia, I used Shan Yao (Chinese Yam), which tonifies both spleen and kidney simultaneously, along with small doses of Shu Di Huang (Prepared Rehmannia) and Gou Qi Zi (Goji Berry). I wrapped these within the spleen-strengthening framework so that the tonifying herbs would actually be absorbed.
This time, it worked. The night sweats gradually diminished. The back pain, which turned out to be related to both kidney deficiency and damp obstruction, improved significantly over the following two months.
This case taught me several hard lessons that I carry with me to this day.
First: always check for spleen involvement before tonifying. This is perhaps the most fundamental rule in Chinese medicine, yet it is the one most frequently violated. Heavy tonifying herbs are cloying and difficult to digest. If the spleen is not robust enough to handle them, they will cause more harm than good. Li Dongyuan built an entire medical system around this insight — the “earth school” of Chinese medicine — and cases like Mr. Liu’s show exactly why it matters.
Second: look beyond the most obvious pattern. Mr. Liu’s symptoms of night sweats, tinnitus, and back pain screamed “kidney yin deficiency,” and they were right to do so. But I failed to look deeper. The teeth marks on his tongue, the slight central coating, the history of digestive sensitivity — these were signs of spleen deficiency that I glossed over because I was too focused on the kidney pattern.
Third: tonification should be gentle and gradual, not aggressive. The instinct when facing deficiency is to prescribe heavily. But the body’s ability to absorb tonifying herbs is limited by the strength of the spleen. A small dose that is actually absorbed is far more valuable than a large dose that sits in the gut as stagnant dampness.
Fourth: when a patient gets worse, stop and reassess immediately. I should have asked Mr. Liu to come in at the first sign of digestive distress rather than waiting a full week. In my defense, I had told him to report any adverse effects — but I should have been more proactive about following up within the first few days of a new prescription.
Zhang Zhongjing wrote in the Shang Han Lun: “When treating disease, one must observe the changes and adjust accordingly.” There is no formula, no matter how classic or well-indicated, that works in every patient. The art of Chinese medicine lies not in pattern recognition alone, but in the continuous process of observation, reassessment, and adjustment.
Mr. Liu eventually recovered fully. He was gracious about the setback. But I resolved never to make the same mistake again — and sharing this failure openly is my way of honoring that resolution.
Professor Zhao Hanqing is a senior TCM practitioner at Beijing Heniantang, one of China’s oldest and most prestigious traditional pharmacies, established in 1405 during the Ming Dynasty. With decades of clinical experience, Prof. Zhao specializes in classical formula therapy and internal medicine, with a particular focus on complex deficiency patterns and the integration of Li Dongyuan’s spleen-stomach theory into contemporary clinical practice.
Disclaimer: This case is presented for educational purposes. Individual results may vary. Always consult qualified healthcare providers before beginning any treatment.
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