What does it mean if I have red spots on skin after scratching?

Dermatographism. Dermatographism means the ability to write on the skin. People with this form of chronic urticaria are sensitive to touch and pressure, as well as scratching. The areas of skin that are touched or scratched get a raised, red and itchy rash. While many people with chronic urticaria have some features of dermatographism, people with true dermatographism have pressure as the only trigger.

Related Questions

What are little red spots on skin and what causes it?

Uncertain. This can't be diagnosed with the information that is available. A history, physical examination & other studies may be needed to determine cause/causes. Once accurately assessed a treatment plan can be developed. Read more...

What could be the cause of tiny red spots on skin? They look like tiny red flat miles. Have had them for years.

Recommend eval. This can't be diagnosed with the information that is available. A history, physical examination & other studies may be needed to determine cause/causes. Once accurately assessed a treatment plan can be developed. Read more...

Wondering why red spots on skin and itchy?

See below. Symptoms like these are best deterimed by a thorough evaluation by your physician. Based on his/her findings, a treatment plan can be developed to help you. Read more...
Uncertain. This can't be diagnosed with the information that is available. A history, physical examination & other studies may be needed to determine cause/causes. Once accurately assessed a treatment plan can be developed. Read more...

Tiny red spots on skin. Kinda look like tiny cuts and maybe bleeding under the skin. What could this be? .

Petechiae? This sounds like petechiae, which actually is small volume bleeding just under the skin. This should be examined by a provider- petechiae have several causes but can be present with platelet disorders, that can affect blood clotting. Occasionally severe infections can cause petechiae, but most people at that stage wouldn't be on healthtap- they'd be in the icu! Read more...
Unsure. These lesions would likely need to be examined and more history obtained to be able to provide you with useful input about the diagnosis or possible treatment. Read more...