What are the early symptoms of psoriasis?

The early symptoms of psoriasis are mainly manifested in the following aspects: 1. **Rashes and Papules**: In the early stage, red papules or maculopapular eruptions ranging in size from a grain of millet to a soybean may be observed. These lesions gradually enlarge and multiply, merging together to form patches with various shapes, such as drop-like, coin-like, or map-like patterns. 2. **Scale Coverage**: The affected skin is covered with thick, grayish-white or grayish-yellow scales. Symptoms on the scalp are particularly noticeable and may cause hair to clump together in tufts due to the accumulation of scales. 3. **Film Formation and Punctate Bleeding**: The scales can be easily scraped off. After removal, a淡red, translucent membrane can be observed. Further removal of this membrane may reveal pinpoint bleeding spots. 4. **Well-defined Borders**: The borders of the rashes are typically clear and distinct. Lesions can appear on various parts of the body, including the neck, limbs, shoulders, waist, and others. 5. **Itching**: Psoriasis often presents with itching during its onset, which may interfere with the patient's daily life and sleep. If any of the above symptoms occur, it is recommended to seek medical attention promptly for early diagnosis and management to control the progression of psoriasis.