I have dark lines on my neck and I don’t know what it is or where it came from. Does anyone have these?
I am not a doctor but it looks like it could be a few things, 1 if that area is not getting cleaned really well since it is in the crease of your neck then this could happen. Obviously an easy way to tell is to use soap and water and consistently everyday wash the area. Make sure to completely dry it as well. 2. Are you taking any prescription medications? Could be a reaction to a medicine. 3. Are you diabetic or prediabetic? If you have not had your blood sugars checked in a while might get them checked. Best of Luck!