What causes dull, yellowish skin with spots?
Generally, dull and yellowish skin with spots may be caused by inadequate sun protection, irregular作息, melasma, post-inflammatory hyperpigmentation, or abnormal liver and gallbladder function. It is recommended to seek medical attention promptly, identify the underlying cause, and receive appropriate treatment under a doctor's guidance. Specific analysis is as follows:

1. Inadequate sun protection: Prolonged exposure to ultraviolet (UV) rays stimulates melanocytes to become overactive, leading to both dull, yellowish skin and pigment deposition that forms dark spots. When going outdoors, apply sunscreen with SPF 30 and PA+++, reapplying every two hours, and combine with physical sun protection such as umbrellas and hats to reduce UV exposure.
2. Irregular作息: Long-term sleep deprivation slows metabolism, causing toxin buildup that leads to dull, yellowish skin, while hormonal imbalance further triggers pigmentation. Adjust your作息 by going to bed before 11 p.m. each night, ensuring 7–8 hours of sleep. Avoid using mobile phones before bedtime, and improve sleep quality through foot baths, meditation, or similar methods.
3. Melasma: Hormonal changes and high stress levels can trigger melasma, characterized by symmetrical light brown patches on the cheeks, accompanied by dull, yellowish skin. Patients may use medications such as hydroquinone cream, tretinoin cream, or tranexamic acid tablets as prescribed by a doctor to inhibit melanin production.
4. Post-inflammatory hyperpigmentation: After inflammatory conditions such as acne or allergic reactions subside, localized areas may retain pigmentation, resulting in uneven, dull, and yellowish complexion. As directed by a physician, patients may use creams such as asiaticoside ointment, azelaic acid cream, or vitamin E cream to promote pigment metabolism and avoid further irritation to the affected area.
5. Liver and gallbladder dysfunction: Impaired liver and gallbladder metabolism can lead to elevated bilirubin levels, causing yellowish, dull skin. Toxin accumulation may also contribute to pigmentation, often accompanied by yellowing of the whites of the eyes. Patients should take medications such as Yinzhihuang oral liquid, compound glycyrrhizin tablets, or silybin capsules as prescribed to improve liver and gallbladder function.
In daily diet, increase intake of vitamin C-rich fruits and vegetables such as lemons and strawberries, and reduce consumption of high-sugar and high-fat foods. Choose gentle brightening skincare products and avoid frequent exfoliation. Maintain a positive mood and engage in regular exercise to promote blood circulation and enhance skin metabolism.