Disease: AIDS (Acquired ImmunoDeficiency Syndrome)
Pathogen: Human Immunodeficiency Virus (HIV)
Symptoms:
- Fever, lethargy, pharyngitis, weight loss, nausea, headache, rashes, etc.
- Immunity is compromised due to destruction of T-lymphocytes.
Diagnosis:
- Can be diagnosed with ELISA Test and Western Blotting Test.
- PCR is also used for the diagnosis
Transmission:
- Via blood and semen
Incubation Period: 6 months to 10 years
Treatment:
- Use of certain drugs can prolong the life of a patient as there is no permanent cure.

Disease: Hepatitis B
Pathogen: Hepatitis B Virus
Symptoms:
- Fatigue, jaundice, persistent low-grade fever, rash and abdominal pain.
- Can cause cirrhosis and liver cancer.
Diagnosis:
- Diagnosed by Australian antigen test, also called Hepatitis-B surface antigen (HBSAg).
- ELISA can also be used for diagnosis.
Transmission:
- Through blood transfusion, sexual contact, saliva, intravenous drug abuse, sharing of razors.
Incubation Period:
- 30-80 days
Treatment:
- There is no cure for this STD.
- Vaccines to prevent the disease are available.

Disease: Genital Herpes
Pathogen: Herpes simplex virus
Symptoms:
- Vesiculopustular lesions followed by clusters of painful ulcers over genitals and anal region.
- Symptoms are severe in females.
- Infection of the neonate can occur in case of infected females.
- Fever, headache, pain, itching, vaginal and urethral discharge occur.
Diagnosis:
- It is done through clinical symptoms, antigen detection, PCR and nucleic acid hybridization.
Transmission:
- Through sexual contact.
Treatment:
- There is no cure for this disease.

Disease: Genital warts
Pathogen: Human papillomavirus (HPV)
Symptoms:
- Warts develop over the skin and mucosal surface of external genitalia.
- In females, the infection may enter the vagina and cervix.
Diagnosis:
- Diagnosis is made through clinical symptoms, antibody detection, culture and DNA hybridization.
Transmission:
- Through sexual contact
Treatment:
- Cryosurgery is used in the removal of internal warts.