What should I do if white patches appear on the skin?

In response to this situation, the following steps are recommended:

1. Seek timely medical attention: It is important to visit a dermatologist as soon as possible to determine the cause through professional examination. The doctor may perform a skin biopsy, Wood's lamp examination, or blood tests to confirm the specific condition.

2. Targeted treatment: Based on the diagnostic results, the doctor will develop an appropriate treatment plan. If it is vitiligo, topical medications, oral medications, or laser therapy might be recommended. For pityriasis alba or tinea versicolor, antifungal medications may be required.

3. Pay attention to daily skincare: Keep the skin clean and dry, and avoid using cosmetics or cleansing products with strong irritants. If the depigmentation is caused by sun exposure, take care to protect against the sun by using sunscreen with a high SPF.

4. Psychological adjustment: Skin conditions can sometimes cause psychological stress; therefore, it is important to maintain a positive attitude and seek psychological counseling or support when necessary.

During treatment, follow the doctor's instructions, take medications on time, maintain clean and dry skin, and avoid using irritating cleansing products. Additionally, maintaining good lifestyle and dietary habits will aid in the recovery process.