Herpes simplex type 1 or 2 viruses causes genital herpes, an infection of the skin and mucous membranes in the genital and surrounding areas. Herpes simplex virus usually spreads, when in contact with blisters. However, people with genital herpes can shed the virus from the genital area and infect others even without a blister being present. Cold sores on the mouth are a potential source of genital infection during mouth-to-genital contact. Medications can help decrease the severity of the herpes lesions and prevent recurrences, but they do not cure the infection

Genital herpes is the sexually transmitted disease (STD) that is not completely curable.

Explanation:

1. Gonorrhoea:
- Gonorrhoea is a bacterial infection caused by the bacterium Neisseria gonorrhoeae.
- It can affect both men and women and is transmitted through sexual contact.
- Gonorrhoea can be effectively treated and cured with appropriate antibiotics.

2. Genital warts:
- Genital warts are caused by certain strains of the human papillomavirus (HPV).
- They are characterized by small, flesh-colored or gray growths in the genital area.
- While the warts themselves can be treated and removed, the HPV infection cannot be completely cured.
- However, the immune system can usually clear the virus over time, and most people with HPV don't develop any long-term complications.

3. Chlamydiasis:
- Chlamydiasis is caused by the bacterium Chlamydia trachomatis and is one of the most common STDs.
- It can infect both men and women and is transmitted through sexual contact.
- Chlamydiasis can be effectively treated and cured with appropriate antibiotics.

4. Genital herpes:
- Genital herpes is caused by the herpes simplex virus (HSV), specifically HSV-2.
- It is characterized by painful sores or blisters in the genital area.
- While antiviral medications can help manage outbreaks and reduce the risk of transmission, there is no cure for genital herpes.
- The virus remains in the body and can reactivate periodically, leading to recurrent outbreaks.
- However, with proper management and precautions, individuals with genital herpes can lead healthy and fulfilling lives.

Summary:
- Gonorrhoea, chlamydiasis, and genital warts can be effectively treated and cured with appropriate medications.
- However, genital herpes, caused by the herpes simplex virus, does not have a cure, but antiviral medications can help manage symptoms and reduce the risk of transmission.