What causes red colored line on the wrist?
Patient: I ve noticed a red rash like line starting on my left wrist, it goes nearly half way around, it itches and is swollen. it stops on the center of my hand, perpendicular with my ring finger. the width is nearly half an inch. and it s about 2-3 inches long. Doctor: Hi,  Yours symptoms seem to be related to contact dermatitis.I suggest you to use calamine lotion for local relief at the affected area.I also suggest you to use antihistamines daily.  Hope I have answered your query.  Let me know if I can assist you further.