If the vertical lines appear on the surface of the stomach, you need to carefully observe the appearance of the appearance, touch the vertical lines with your hands, if there is a clear bump, consider the possibility of linear lichen planus, this kind of lichen planus has mild keratinization, generally not painful and not itchy, you can choose to use topical adapalene gel to apply, there is a certain improvement effect. If the vertical lines are mainly arranged in a follicular mouth-like manner with mild projection, it is considered that it may be a linear sebaceous gland hyperplasia, which is caused by an abnormal change in the sebaceous glands. It is recommended to apply 0.1% tacrolimus ointment, which can effectively regulate the immunometabolic ability of the local skin to achieve a therapeutic effect. In addition, the body within a short period of time there is obvious obesity, also prone to swelling lines, also in a linear distribution, can appear obvious depression, it is recommended to apply topical polysulfate mucopolysaccharide cream or human-like collagen repair silicone gel, have a certain preventive and receding effect.