What's wrong with the black lines on toenails?

Most of the acupoints that control various parts of the human body are on the feet, so people who often have foot massages know that frequently massaging the feet will make the body feel comfortable, so foot care is very important, especially female friends must protect their feet, because cold feet will cause uterine cold, if you don’t wash your feet frequently, your toenails will develop various diseases, such as onychomycosis, so what’s the matter with the black lines on the toenails?

The early symptoms of nail melanoma must be taken seriously. You mentioned the early symptoms of nail melanoma, and here is the answer for you. Acro-maculoid melanoma mainly occurs on the palms, soles and subungual areas. During the radiation growth phase, the lesions are brown, brown or black and do not protrude above the skin surface. If irregular brown or brown stripes can be seen under the nail, they extend from the nail bed to the proximal end. The radiation growth phase lasts for about 1 year. If not treated in time, it will enter the vertical growth phase. The lesions are nodular and the lymph node metastasis rate increases accordingly. The prognosis is also poor. Differential diagnosis includes basal cell carcinoma, seborrheic keratosis, dysplastic nevus, blue nevus, cutaneous fibroma, various types of nevus, hemangioma (especially on the hands and feet), venous lakes, suppurative granulomas and warts. If in doubt, a full-thickness skin biopsy slightly beyond the lesion must be performed. Excisional biopsy is done for small lesions, and incisional biopsy is done for larger lesions. Serial biopsy sections can determine the depth of melanoma invasion, and thorough radical surgery must be performed only after a clear histological diagnosis. Criteria for pigmented lesions to be removed or biopsied include recent enlargement, darkening, bleeding, or ulceration of the lesion. However, the above symptoms often mean that the melanoma has invaded deeper layers of the skin.

Generally, malignant tumors such as subungual melanoma can occur on their own, and usually some moles can deteriorate and lead to the formation of tumors. Usually, the main symptoms of worsening of a mole are that the mole's area rapidly increases, its color darkens, and pain and itching appear on the local skin surface. It is often accompanied by ulceration and bleeding.

For a malignant tumor like subungual melanoma, as the disease progresses, it will gradually metastasize and spread to various parts of the body. However, if the tumor cells invade the surrounding lymph nodes, it will cause regional lymph nodes to swell and increase in number. However, it generally spreads mainly through the blood circulation, and metastasis to organs such as the lungs, bones, and brain is the most common.