Suddenly developed white itchy bumps on the hand

Sudden appearance of white, itchy bumps on the hands is generally caused by factors such as eczema, urticaria, or flat warts. Since different underlying causes require different treatments, specific analysis is as follows:

1. Eczema

Eczema is a skin inflammation triggered by various internal and external factors, possibly related to intrinsic body conditions such as abnormal immune function or impaired skin barrier function. It commonly occurs on the face, hands, and lower legs. Symptoms include redness, papules, and vesicles, accompanied by itching. Under medical guidance, topical treatments such as calamine lotion or boric acid solution may be applied.

2. Urticaria

Patients develop localized raised wheals on the hands, accompanied by itching. This condition may be associated with allergies, infections, psychological stress, or endocrine disorders. Identifying the allergen promptly is important. Under medical supervision, oral antihistamines such as chlorpheniramine maleate tablets or loratadine tablets may be prescribed.

3. Flat Warts

Flat warts are benign skin growths caused by human papillomavirus (HPV) infection. Clinically, they appear as flat, slightly raised papules that may be light yellow or light brown, with a rough texture upon touch. Under medical guidance, treatments such as tretinoin cream or imiquimod cream can be applied.

In addition, neurodermatitis could also be a possible cause. It is recommended to seek timely medical evaluation for proper examination and diagnosis to determine the exact cause and receive targeted treatment. Meanwhile, maintain clean and dry skin, avoid scratching, use medications to relieve symptoms, and pay attention to diet and staying warm.