Why do small bumps appear on my face when I return to my hometown, and what should I do about it?

Small bumps on the face after returning to one's hometown may be caused by environmental dust irritation, changes in climate humidity, contact dermatitis, eczema, or folliculitis. These issues can be improved through proper cleansing and protection, adjusting skincare routines, and medical treatment. If the bumps become dense, itching worsens, or pus develops, prompt medical attention is necessary.

1. Environmental Dust Irritation: Outdoor dust, pollen, or indoor dust in rural areas may adhere to the face and clog pores, causing small bumps, usually without significant itching. It is recommended to wear a mask when going outdoors and use a gentle facial cleanser upon returning home to reduce dust residue.

2. Climate and Humidity Changes: Differences in climate between the hometown and usual residence—such as overly dry or humid conditions—can compromise the skin barrier, leading to sensitive skin and breakouts, sometimes accompanied by mild dryness or oiliness. Adjust skincare according to the climate: increase moisturization in dry conditions and maintain a清爽 (清爽 means fresh/clear) facial feel in humid environments.

3. Contact Dermatitis: Exposure to specific allergens in the hometown, such as mites or plant sap, may trigger skin inflammation, resulting in red small bumps with noticeable itching. Under a doctor’s guidance, patients may use medications such as desonide cream, calamine lotion, or loratadine tablets to relieve symptoms.

4. Eczema: Eczema may be triggered by environmental changes or dietary irritants, presenting as red patches or papular bumps on the face, accompanied by intense itching and flaking. It is advisable to use medications such as mometasone furoate cream, zinc oxide ointment, or cetirizine dispersible tablets under medical supervision to alleviate symptoms.

5. Folliculitis: Changes in hygiene conditions or skincare habits may lead to bacterial infection of hair follicles, forming red, pimple-like bumps, some with pus at the tip. Patients should follow medical advice to use medications such as mupirocin ointment, erythromycin ointment, or cefaclor capsules to improve symptoms.

To protect the skin, maintain facial cleanliness, choose mild skincare products, avoid scratching the bumps, eat a light diet avoiding spicy and irritating foods, apply sunscreen when outdoors, and maintain regular sleep patterns to strengthen skin resistance and minimize the impact of environmental changes.