It's a hard lump, and then it feels a little empty after soaking in water. That's onychomycosis. If it is onychomycosis, it is caused by fungi. Always using external drugs is actually a temporary solution, but it takes both internal and external treatment to achieve the therapeutic effect. It is recommended that you use "Risolao" antifungal medicine while using external medicine (such as nail polish), but this medicine is not sold in pharmacies generally, and it will only be sold if a doctor prescribes it. Take one tablet after meals every day. The dosage should not be too large, which has a certain impact on liver and kidney. If you have liver disease or kidney problems, it is not recommended to take it.

Point-shaped, pale nail bed, suggesting deficiency of qi and blood. White moist is mild, white withered is dull and rough, and it is seriously ill. Spotted white nails (one or several white spots or white clouds or white sheep of different sizes appear on the deck), which are manifested as digestive system diseases, malnutrition, zinc deficiency, syphilis and so on. Pale nails are seen in anemia, malnutrition, liver cirrhosis, chronic colitis, nail biting, Raynaud's disease, pulseless disease and so on. Part of leukonychia can be seen in tuberculosis, nephritis, lymphosarcoma and cancer.

Pay attention to the color of your toenails.