A 35 year old lady presents with painful ulcers on her vulva, what is the appropriate investigation which will lead to the diagnosis?

The key is A. Anti-HSV antibodies. [Genital Herpes may be asymptomatic or may remain dormant for months or even years. When symptoms occur soon after a person is infected, they tend to be severe. They may start as multiple small blisters that eventually break open and produce raw, painful sores that scab and heal over within a few weeks. The blisters and sores may be accompanied by flu-like symptoms with fever and swollen lymph nodes. There are three major drugs commonly used to treat genital herpes symptoms: acyclovir (Zovirax), famciclovir (Famvir), and valacyclovir(Valtrex). These are all taken in pill form. Severe cases may be treated with the intravenous (IV) drug acyclovir].