Cold Sore Symptoms
Herpes simplex virus causes cold sores and genital herpes. When only cold sores are present during an outbreak, this state is referred to as, "HSV-1," and when sores occur around the genitals, "HSV-2." Both states of the virus can be transmitted outbreaks to another person's mouth or genitals, i.e. cold sore to genitals
Yes. Unless actively treated, herpes can spread between partners even in the absence of external symptoms through a process called "viral shedding." Taking a suppressive dose of antivirals is an effective way to limit the likelihood of transmitting the virus when you or your sexual partner is asymptomatic.
The quicker you take medication, the less severe (if at all) the outbreak will be. Keeping meds on hand ensures you can begin treatment while the virus is still prodromal (or in its beginning phase).