Heat Strangury

Lin syndrome (strangury) refers to a group of disorders attributed to dietary factors, overexertion, or invasion by damp-heat. Its main pathomechanisms include kidney deficiency, damp-heat in the bladder, and impaired qi transformation. Its principal clinical manifestations are frequent, urgent urination; dribbling or incomplete urination; urethral discomfort or pain; cramping in the lower abdomen; and pain radiating to the lower back or abdomen. Lin syndrome is also known as linli or the Five Lin Syndromes, and is often abbreviated as lin. Different names are used according to the clinical manifestations, including heat lin, blood lin, qi lin, stone lin (gravel lin), turbid lin, taxation lin, and cold lin. Cases with sudden onset are called sudden-onset lin or acute lin. Lin occurring during pregnancy or after childbirth is called pregnancy lin or postpartum lin. In older adults, it is called senile lin. Conditions in Western medicine such as urinary tract infection, urinary tract stones, urinary tuberculosis, urinary tract tumors, chyluria, prostatitis, and benign prostatic hyperplasia may be considered for pattern differentiation and treatment with reference to this section when urinary tract irritative symptoms are present.

TCM Pattern Differentiation and Medication Reference

|Common Symptoms

Clinical description:

Frequent, urgent, scanty, and difficult urination; burning, stabbing pain in the urethra; yellowish-red urine; yellow, greasy tongue coating; slippery, rapid pulse

Plain-language explanation:

  • Urination is frequent and urgent, with small amounts passed and a strained or uncomfortable flow.
  • There is a burning sensation and stabbing pain in the urethra, with noticeable discomfort during urination.
  • The urine is yellowish to reddish and darker in color.
  • The tongue coating is yellow and greasy, appearing thick on the tongue.
  • The pulse feels slippery and faster than usual.

|Treatment Approach

Clinical description:

Clear heat and toxins, promote urination, and relieve strangury

Plain-language explanation:

  • Aims to clear internal heat and help eliminate unwanted substances, potentially easing discomfort such as fever, restlessness, sore throat, or painful sores and swelling.
  • Aims to promote the elimination of dampness and support the flow of urine, potentially easing scanty, dark urine, burning or stabbing pain, or difficulty urinating.

|Related Products

The following products are provided for informational purposes only and do not constitute medical advice or a prescription. Follow the product packaging and instructions, and use under the guidance of a doctor or pharmacist.

  1. Wang Yongyan, Yan Shiyun. Practical Internal Medicine of Traditional Chinese Medicine [M]. 2nd ed. Shanghai: Shanghai Scientific and Technical Publishers, 2009.
  2. Wu Mianhua, Wang Xinyue. Internal Medicine of Traditional Chinese Medicine [M]. 9th ed. Beijing: China Press of Traditional Chinese Medicine, 2012.
  3. Wang Jiyao. Internal Medicine [M]. 2nd ed. Beijing: People’s Medical Publishing House, 2010.
  4. Zhou Lei, Han Jie, Gao Suqiang. Rational Use of Chinese Patent Medicines for Urinary System Diseases [J]. Capital Medicine, 2011, 10: 41–43.
  5. Li Mingchen, Wu Cunxia. Clinical Experience with Chinese Patent Medicines for Urinary Tract Infections [J]. Evaluation and Analysis of Drug-Use in Hospitals of China, 2007, 7(4): 312–313.
  6. Pu Xiang, Zhang Junhua. Analysis of Clinical Research Literature on Traditional Chinese Medicine Treatment of Uncomplicated Urinary Tract Infection [J]. Liaoning Journal of Traditional Chinese Medicine, 2016, 43(3): 516–519.
  7. Zhu Jianming, Pang Haolong, Gong Lianbing. Series of Lectures on Rational Medication Use in the Armed Forces (41): Rational Use of Chinese Patent Medicines for Chronic Pyelonephritis [J]. People’s Military Surgeon, 2014, 57(5): 556–557.