What should I do if white patches suddenly appear on my face?

When white patches suddenly appear on the face, it is important to recognize that this may be a manifestation of various skin conditions, including but not limited to vitiligo, hypopigmentation, fungal infections (such as pityriasis versicolor), contact dermatitis, or certain drug reactions. The following steps are recommended:

1. Professional diagnosis: Seek medical attention promptly and undergo a thorough examination and diagnosis by a dermatologist. The doctor may use methods such as dermoscopy, biopsy, or blood tests to determine the cause.

2. Symptomatic treatment: If diagnosed with vitiligo, topical application of tacrolimus ointment combined with narrowband medium-wave ultraviolet light therapy may be used. For larger areas of white patches, Baibu tablets or intramuscular injections of psoralen may be considered.

3. Lifestyle adjustments: Maintain local hygiene, avoid prolonged direct sunlight exposure, follow a bland diet, avoid spicy and irritating foods, and refrain from scratching the affected area.

4. Psychological adjustment: Emotional management is important when facing changes in skin appearance. Communicating with family, friends, or professionals and seeking support and understanding can help alleviate anxiety and stress.

5. Regular follow-up: Follow the doctor's recommendations for periodic check-ups to monitor changes in the condition and adjust the treatment plan as needed.