Tingling of the skin when flushing the perianal area with water may be caused by trauma, anal fissures, etc. 1. If the perianal skin is traumatized, it may cause stinging pain when flushing with water. In this case, the first thing to do is to determine the cause of the disease, observe the wound and determine the location, depth, size and depth of the wound. After fully cleaning and exposing the wound, dry it, disinfect the wound with an antiseptic such as iodophor, and then carry out further bandaging treatment. 2. The above manifestations may also occur in anal fissure. When the skin below the dentate line is cracked and an ulcer forms, it is called anal fissure. Such people may experience corresponding pain in the perianal area when irritated by water flow. Treatments for anal fissure include conservative treatments such as warm water sitz baths and anal dilation as well as surgical treatments. If you experience discomfort, please seek medical attention to clarify the cause of the condition and follow the doctor’s instructions.