Thank you for asking your query.
- HSV1 usually occurs above waist, like in mouth lips etc. HSV2 infection usually occurs below waist ie genital area.
- Yes, HSV1 can spread from mouth to penis via oral sex. It can be recurring too if the contact continues.
- No you cannot get HSV 2 from HSV1 without another infection
- IgG of HSV1 and 2 are not a definitive test. It can be falsely positive. It can also indicate a previous infection. So if you have symptoms of HSV1 with the positive IgG then you can safely conclude there is HSV infection. Otherwise this test is not meaningful.
Hope this helps