In many cases, herpes virus does not recur, there is some possibility that herpes recurs infrequently (every 3 to 12 months), but few people have more frequent outbreaks. Herpes outbreaks usually decrease over time. But outbreaks could recur without a cause, or when the immune system is weak. Other viral infections (such as a cold) could cause outbreaks.

Physical factors

Physical factors differ from person to person, but might be caused from:
Being run-down
Suffering from other genital infections (affecting the local skin area)
Menstruation
Drinking a lot of alcohol
Exposure of the area to strong sunlight
Conditions that compromise a person’s immune system (where the body’s immune system is not functioning normally)
Prolonged periods of stress
Ultraviolet light
Friction or damage to the skin,  might also lead to a recurrence
Surgical trauma
Anything that lowers your immune system or causes local injury could trigger recurrences.
Periods of prolonged stress could cause more frequent recurrences

Psychological Factors

Stress, both physical and emotional, probably plays a role in triggering herpes outbreaks. Although you could t avoid stress, it s important to minimize it. Steer clear of products that irritate the skin, such as feminine deodorants, scented soaps, and douches. Conversely, behaviors that strengthen the immune system could help keep the virus in check. These include such tried-and-true health promoters as a regular exercise, stress management, nutritious diet, and adequate sleep.