The red marks left after the skin abrasion scabs are not considered scars. After a skin abrasion, a scab will form, and when the scab falls off, new skin will appear, which is visually reddish in color because the normal skin barrier has not been fully established. This is a normal skin repair process, generally new skin after a period of time will develop into normal skin color. You should pay attention to keep the local cleanliness and hygiene, do not excessive exposure to the sun, to avoid hyperpigmentation. Scars are the product of skin damage to the epidermal hair layer and dermis later healing and repair, commonly found in patients with deeper skin lesions or keloid scarring, mainly manifested as a reddish color tissue higher than the skin surface, usually occurring weeks and months after the trauma, and mostly protruding from the skin surface. Skin abrasion scabs leave red marks, if abnormal symptoms, need to go to the regular medical institutions in a timely manner, follow the doctor’s instructions standardized treatment, so as not to delay the condition.