Dermatographia is a skin condition wherein the skin is so sensitive that if you scratch the surface lightly, red lines will appear. Another term used for dermatographia is “skin writing” because people with this condition can literally write on their skin because of how sensitive their skin is.
Many people tend to ignore medical issues until they progress into something serious. Take for example, a persistently itchy skin. It’s only a minor thing when you think about it, but there could be worse underlying medical causes that should be attended to as soon as possible to reduce damage.