My face becomes oily and my skin feels slightly itchy after taking traditional Chinese medicine—what should I do?

If facial oiliness and mild skin itching occur after taking traditional Chinese medicine (TCM), this may indicate an allergic reaction. Treatment should be selected based on the severity of symptoms:

Mild cases: Discontinue the TCM immediately. If only mild, localized itching is present, close observation may suffice initially. You may apply non-hormonal, moisturizing topical agents, or—under a physician’s guidance—take oral antihistamines. Symptoms typically resolve within two to three days.

Severe cases: If intense itching, widespread rash, erythema, swelling, ulceration, or exudation (signs of dermatitis) develop—or if mild symptoms fail to improve or worsen—seek immediate medical attention at a local hospital. Under professional supervision, appropriate topical and systemic medications should be prescribed to prevent disease progression.

During treatment, avoid consuming fish, shellfish, and other potential allergens; maintain a light, bland diet. Do not wash your face with excessively hot water, as it may irritate the skin. Avoid using soap altogether, since its alkaline content can exacerbate allergic dermatitis.