There are white dandruff on my pants

White dandruff on your pants may be caused by skin problems such as dry skin or psoriasis. When the skin is dry, the cuticles fall off and form fine flakes, while psoriasis may produce thicker, silvery-white scales. You need to pay attention to moisturizing your skin every day. If you are accompanied by symptoms such as redness, swelling and itching, it is recommended to seek medical attention to check for skin diseases.

Dry skin is the most common cause of white dandruff. Factors such as low air humidity in autumn and winter, frequent bathing, use of alkaline cleaning products, and insufficient drinking water can lead to damage to the skin barrier and accelerated water loss in the stratum corneum, resulting in fine scaling. This type of dandruff is usually in powder form and mostly appears on the calves, arms and other areas where sebaceous glands are less distributed. Improvement methods include reducing the frequency of bathing, controlling the water temperature below 40°C, applying moisturizing cream containing urea or ceramide within 3 minutes after bathing, and drinking more than 2000 ml of water per day.

The dandruff caused by psoriasis has distinctive characteristics. The skin lesions will be covered with multiple layers of silver-white scales. After scraping off, thin films and spot-like bleeding can be seen, which are more likely to occur on the scalp, elbows and knees. The disease is related to genetic and immune abnormalities and needs to be diagnosed through dermoscopy and pathological biopsy. For treatment, topical medications such as calcipotriol ointment and tacrolimus ointment can be used as directed by the doctor. Moderate to severe patients may require systemic treatment such as acitretin capsules. Patients should avoid scratching and wear pure cotton clothing to reduce friction and irritation.

Other possible conditions include dandruff due to seborrheic dermatitis, annular erythema with scaling due to fungal infection, or a rare genetic skin disease such as ichthyosis. It is recommended to observe whether the dandruff is accompanied by symptoms such as erythema, itching, and exudation, and record the time and location characteristics of the dandruff to help doctors make accurate judgments. You should choose loose and breathable clothing every day and avoid using alcohol-based skin care products. It is recommended that the indoor humidity be maintained at around 50%. If there is no improvement or symptoms worsen after two weeks of self-care, you need to see a dermatologist in time.