He has been ill for seven or eight years. He is fine in summer and severe in winter. He can't help tearing his skin and shining his fingers into pain and bleeding sometimes
It may be tinea manus. It is suggested to go to the hospital to hang a dermatology department to test the fungi. If the body lacks vitamins, it may also cause this situation. Pay attention to eating more vegetables and fruits rich in vitamins in daily life to ensure that the body has enough vitamins. You can also take oral vitamins to supplement them.
According to the pictures you uploaded, it is mainly caused by dry weather and dry cracks on your skin. This is a bad habit for you. You can apply Vaseline ointment, and it is recommended to keep warm. You can rub your hands frequently to promote local blood circulation and avoid getting wet, so that you can gradually recover
This is a problem of habit, a bad habit and hobby. You can wrap the finger with gauze every day to avoid tearing the skin by hand. If your condition is broken, you need to disinfect with Iodophor. Generally speaking, it can be dried in three or five days, and the scab will grow well.