"What Kinds of Skin Conditions Commonly Affect the Legs?"

The sensitivity of the skin on the feet is relatively high, and it is prone to infections caused by bacteria and fungi. Therefore, it is important to maintain good hygiene of the skin on the feet. When the skin on the feet becomes damp, it can easily lead to the occurrence of ringworm, eczema, and urticaria. Additionally, when the body's resistance is poor, the skin is prone to developing scabies, chickenpox, and other diseases. Therefore, when skin diseases occur on the feet, it is necessary to understand their types and treat them accordingly.

1. Ringworm: This disease usually appears as patches with a red outer rim and white inner areas, along with some normal skin. Hair loss may occur in the affected areas. The symptoms may减轻or disappear during winter, but they tend to recur during hot weather. Initial symptoms of ringworm include erythema, papules, or vesicles on the affected skin.

2. Eczema: This disease is characterized by hard, small bumps. Eczema has three main features: intense itchiness, recurrent episodes, and polymorphic eruptions. It is manifested by redness, edema, itching, and dryness, and may be accompanied by crusting, peeling, blistering, cracking, bleeding, or oozing.

3. Urticaria: The most obvious feature of urticaria is the appearance of red, raised wheals. Initially, red spots may appear on various parts of the body, often concentrated on the face, legs, and arms. These spots then form raised patches that gradually increase in size or coalesce, often accompanied by intense itching. The itching usually lasts for about an hour, and the redness and swelling gradually resolve over several hours or even a day. The wheals then disappear spontaneously.

4. Psoriasis: The typical skin manifestations of psoriasis include well-defined, red patches with silvery white scales. In mild cases, the patches may be small and localized to the elbows and knees. In severe cases, they can cover the entire body.

5. Chickenpox: This disease mainly occurs in childhood and is characterized by fever and the appearance of red maculopapules, vesicles, and crusts in batches over the entire body.

6. Scabies: The main manifestations of scabies include the appearance of papules and vesicles in the tender areas of the skin, accompanied by intense itching that intensifies during the night.

7. Psoriasis Vulgaris: Initially, it presents as inflammatory, red papules, about the size of a grain of millet to a green bean. They gradually expand or fuse into brownish-red patches with an inflammatory red halo. The base is infiltrated, and the surface is covered with multiple layers of grayish-white or silvery white scales. Gentle scraping of the surface scales gradually reveals a layer of reddish, translucent, and shiny thin film, known as the film phenomenon. The combination of white scales, shiny film, and pinpoint bleeding are key to diagnosing psoriasis.