Black lines on nails are not a precursor of cancer. Common causes of black lines on nails include nevus of nails, lack of micronutrients and other disease causes, as well as physiological causes such as overwork and lack of sleep.
1. Disease causes
(1) Onychomycosis: Onychomycosis is mostly induced by fungal infection and trauma, and the most common symptom is black lines on nails, which will develop into melanoma if not properly taken care of by patients.
(2) Lack of micronutrients: when the body lacks micronutrients, the symptom of black nails will appear, and there will be brittle nails, nail scabs and so on. It may be that the patient’s body lacks trace elements such as vitamin A, calcium or iron. It is recommended that patients go to the hospital for trace element testing, under the guidance of the doctor to supplement the lack of trace elements can be.
2. Physiological reasons: If the patient is overworked, severely sleep deprived, or under too much mental stress, black lines on the nails may also occur.
If you find the above symptoms, you don’t need to worry too much, you should seek medical treatment in time, go to regular hospitals to find a specialist doctor, timely diagnosis and treatment, so as not to delay the condition.