Some conditions may also cause you to have blood or protein in your urine. If you have a urinary problem, see your healthcare provider. Urinalysis and other urine tests can help to diagnose the problem. Treatment depends on the cause.
Cold sores are usually caused by the herpes simplex virus (HSV) type 1, which is transmitted by such forms of contact as kissing an infected person or sharing eating utensils, towels, or razors. Genital herpes is usually caused by herpes simplex virus type 2.
Cold sores are inflamed blisters in or near the mouth and lips. A herpes virus causes cold sores. Herpes simplex virus type 1 (HSV-1) causes about 80% of cold sores while herpes simplex virus type 2 (HSV-2) causes about 20%. Cold sores are often confused with canker sores. Canker sores are not caused by herpes viruses, are not contagious, and occur mainly inside the mouth, not on the surface of the lips.