There are white, scaly patches on the scalp that can be scraped off.

White, flaky patches on the scalp that can be picked off may result from physiological factors or conditions such as folliculitis or seborrheic dermatitis. In such cases, it is important to seek medical evaluation promptly and receive treatment based on the underlying cause. Specific analyses are as follows:

1. Physiological Factors

Under normal circumstances, the scalp has its own metabolic cycle, and dandruff may naturally appear in localized areas. This can be manually removed and typically does not cause discomfort. It requires no treatment and is considered a normal phenomenon.

2. Disease-Related Factors

1) Folliculitis

When hair follicles on the scalp become inflamed due to infection, red papules may appear with white pustules at the tips. Scratching may lead to the shedding of white, flaky material, often accompanied by tenderness and exudation. This condition is usually associated with bacterial infection. Patients should use topical medications such as erythromycin ointment or chlortetracycline hydrochloride ointment under medical guidance.

2) Seborrheic Dermatitis

In patients with seborrheic dermatitis, red patches appear on the scalp, covered with abundant white scales, along with itching. It is generally recommended that patients take medications such as itraconazole capsules or vitamin B2 tablets under a doctor's supervision to alleviate symptoms.

Besides the common causes mentioned above, other possible conditions include tinea capitis, pityriasis simplex, psoriasis, etc. Patients should pay attention to proper scalp care, keep the area clean and dry, and avoid excessive scratching.