The difference between a bloody scab and a crust is essentially no different. After a skin injury, the intertissue fluid at the base of the injury oozes out, dries and forms a scab, which is called a scab. If blood oozes out at this point and a scab is formed, it is called a blood scab. This means that blood scabs are only one condition of scabs. Regardless of whether it is a blood scab or a scab, you first need to take care of good local hygiene. If the area of the wound is relatively small, generally do not need special treatment, wait for a period of time can be fully recovered; if the area of the wound is relatively large, you can follow the doctor’s advice to take amoxicillin, cefaclor and other antibiotics to prevent and control infections, and external iodine povidone regular disinfection, if necessary, can be bandaged wounds, and regular change of medicine treatment. When the skin appears blood crust or scab, avoid scratching with your hands, let the wound recover naturally, to prevent secondary damage to the skin leaving scars.