What disease is there black dot in fingernail

Nail black spots, may be caused by congestion. For example, accidentally by trauma, showing under the nail congestion, can be local hot compress, help promote local blood circulation, can improve symptoms. If the exclusion of trauma caused by, may also be fungal infection caused by early onychomycosis. If considering fungal nail infection, should be cut short nails, local can use bright nail, can also be oral antifungal treatment, such as the choice of itraconazole, are conducive to antifungal treatment.