Does hsv-2 can affect blisters on foot, mouth, hands, tongue, face and scalp?

See PCP: From what you say, that sounds a lot like hand, foot, and mouth disease. You may need to see an infectious disease specialist, but start with your pcp. Soon.

Unlikely: It is unlikely that an hsv 2 infection could cause such widespread blistering. It can occur if you are immunosuppressed. See your primary care doctor for a thorough workup and physical exam.