The fingernails on both hands are uneven. Each nail has vertical lines that are very obvious. All 8 nails have concave spots like thimbles. Only two thumbs have small crescents.

1. Raised vertical lines on the nails indicate neurasthenia. Several vertical lines on the nails are a symbol of long-term neurasthenia and aging of the body.

2. The fewer half-moon marks, the colder it is. If there are no half-moon marks, it is cold type. The cold type indicates that the yang energy in the body is weak and the yin and cold are relatively strong. Low organ function, slow movement of qi and blood, easy fatigue, lack of energy, poor absorption function, pale complexion, cold hands and feet, palpitations, drowsiness, easy colds, repeated colds, decreased energy, physical decline, and even phlegm-dampness stagnation, Qi stagnation and blood stasis, phlegm-damp nodules, tumors;

3. Is it possible to consider psoriasis as a skin disease?