This is a prospective registry study to surveil early liver injuries caused by Yangxue Shengfa Capsule (YXSF Capsule) through a non-intervention observational way. And attempt to establish a predictive model to screen susceptibilities to YXSF Capsule.

The primary objectives of this study include:

(i) The detection of patients with serum liver biochemistry abnormalities less than 8 weeks after intake of YXSF Capsule; (ii) The record of overall individuals with demographics, underlying diseases, physical status, medication information, clinical laboratory index, and so on; (iii) The specimen collection of surveiled individuals. (iv) The attempt to establish a predictive model to screen susceptibilities to YXSF Capsule.

Inclusion Criteria:

1. Individuals in accordance with indications for YXSF Capsule, including xerasia, itchy scalp, alopecia areata, seborrheic dermatitis and alopecia;

2. The age range of 18 to 70 years；

3. Individuals taking YXSF Capsule over 2 weeks;

4. Abnormalities of serum liver biochemistry achieving one of the criteria as follows:

   (i) alanine aminotransaminase (ALT) or aspartate transaminase (AST) ≥2 folds of upper limit of normal (ULN); (ii) total bilirubin (TBiL) ≥ 2 ULN; (iii) alkaline phosphatase (ALP) ≥ 2 ULN;

5. Individuals can provide informed consent form.

Exclusion Criteria:

1. Individuals without indications for YXSF Capsule;
2. Inconformity to the YXSF Capsule drug label;
3. Individual taking YXSF Capsule less than 2 weeks;
4. Individuals taking other hepatotoxic drugs combined with YXSF Capsule, simultaneously;
5. Inconformity to the diagnostic standard for herb-induced liver injury (the Guideline for Diagnosis and Treatment of Herb-induced Liver Injury, RPGIP-2016CN003）.

community sample and primary care clinic