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.
Anyone who is exposed to the herpes simplex virus (HSV) is at risk for developing cold sores. But many people have the virus and may never develop cold sores. People who have weakened immune systems are at an increased risk for having more severe and longer-lasting outbreaks of cold sores.