This study aims to investigate the characteristics of Traditional Medicine (TM) syndromes in urticaria patients at Le Van Thinh Hospital. Urticaria is a common dermatological condition that significantly impacts patients' quality of life. However, there is limited research on TM syndrome classification in this patient group. The study will collect data on symptoms, TM syndromes, and disease severity to determine common syndromes and their associations with clinical manifestations.

The study will be conducted as a cross-sectional, observational study with an estimated 200 participants. Eligible patients are those aged 18 years or older, diagnosed with acute or chronic urticaria, and willing to participate. The primary outcomes include the prevalence of TM syndromes, itching severity measured by the Visual Analogue Scale (VAS), and the correlation between TM syndromes and itching severity.

The study is approved by the Institutional Review Board (IRB) of the University of Medicine and Pharmacy at Ho Chi Minh City and will be conducted from December 2024 to April 2025 at Le Van Thinh Hospital, Vietnam.

Inclusion Criteria:

• Patients aged 15 years or older.
• Diagnosed with acute or chronic urticaria based on modern medical criteria.
• Willing to participate and provide informed consent.

Exclusion Criteria:

• Patients with other dermatological conditions that may interfere with the diagnosis of urticaria.
• Patients currently using medications that may alter symptom presentation (e.g., antihistamines, corticosteroids, immunosuppressants).
• Patients who refuse to participate in the study

This study will recruit patients diagnosed with acute or chronic urticaria at Le Van Thinh Hospital, Vietnam. The study population will include adult patients (≥15 years old) who meet the eligibility criteria. The focus of the study is to classify Traditional Medicine (TM) syndromes in urticaria patients and explore their association with disease severity. Participants will undergo TM-based diagnostic assessment to determine the prevalence of TM syndromes such as Blood Heat generating Wind, Blood Stagnation generating Wind, and Blood Deficiency generating Dry Wind