What causes white bumps or spots on the skin?

Skin white bumps are generally caused by factors such as hereditary skin characteristics, ultraviolet (UV) radiation, seborrheic dermatitis, vitiligo, and psoriasis. It is recommended to seek timely medical attention, identify the underlying cause, and receive symptomatic treatment under the guidance of a qualified physician. Specific analysis is as follows:

1. Hereditary Skin Characteristics

Hereditary skin traits may lead to thickening of the stratum corneum or abnormal sebaceous gland secretion, resulting in whiteheads or hyperkeratotic papules that appear as white bumps on the skin. In daily skincare, gentle cleansing and moderate exfoliation are important. Salicylic acid facial washes or alpha-hydroxy acid (AHA) products can be used to help dissolve clogged pores and reduce the formation of white bumps.

2. Ultraviolet Radiation

UV radiation can damage melanocytes in the skin and impair their normal function, leading to localized lightening of skin color and the appearance of white or pale bumps or spots. It is important to strengthen sun protection by using sunscreen with a high SPF and avoiding prolonged exposure to intense sunlight.

3. Seborrheic Dermatitis

Seborrheic dermatitis may be associated with excessive sebum production, genetic predisposition, and other factors. Accumulation of excess sebum on the skin can trigger inflammatory reactions, causing white bumps or plaques, often accompanied by mild itching and oily scales. Treatment may include topical medications such as triamcinolone acetonide and clotrimazole cream, hydrocortisone butyrate cream, or mupirocin ointment, as prescribed by a doctor.

4. Vitiligo

Vitiligo may be related to genetic and immune system abnormalities. Destruction of melanocytes in the skin leads to loss of pigmentation, resulting in white patches or bumps. This condition may also be accompanied by whitening of body hair and mild itching. Under medical supervision, medications such as methylprednisolone tablets, prednisone acetate tablets, or bailing tablets may be used to alleviate symptoms.

5. Psoriasis

Psoriasis may be triggered by genetic, infectious, or immune-related factors. In patients with psoriasis, the immune system becomes abnormally active, accelerating the skin cell growth cycle. This results in thick, scaly buildup on the skin surface. As scales accumulate and the condition progresses, small white bumps may appear, along with symptoms such as itching and mild pain. Treatment may involve medications such as tripterygium glycosides tablets, acitretin capsules, or cyclosporine capsules, as directed by a physician.

In daily life, consuming foods rich in vitamin C and vitamin E may help with antioxidant protection and skin brightening. Additionally, maintaining sufficient sleep and avoiding late nights can support skin metabolism and repair, helping to reduce the occurrence of white bumps.