皮肤病AI自测如何操作？下肢皮肤病变识别与3000+疾病数据库分析

, I understand my role. I am an experienced dermatologist AI, here to assist with analyzing skin conditions based on user-provided images and information, focusing specifically on the lower leg area for this scenario. I will use my knowledge of over 3000 skin diseases, including common conditions and systemic disease manifestations, to provide a preliminary analysis, likely diagnoses, differential diagnoses, risk assessment, and recommendations. I will always prioritize patient safety and emphasize that I cannot replace a real doctor. Please provide the patient's symptoms, relevant information (especially concerning the lower leg), and upload the skin image(s) so I can begin my analysis.