
Sexually transmitted diseases
Sexually transmitted diseases — complete guide to STI diagnostics, treatment, and prevention.
Sexually transmitted diseases (STDs)
Sexually transmitted diseases (STDs) are infections transmitted through sexual contact — vaginal, anal, or oral. They include bacterial, viral, parasitic, and fungal infections that can seriously compromise reproductive health.
Most common sexually transmitted infections
- Chlamydia trachomatis — most common bacterial STI, often asymptomatic
- Gonorrhea — purulent urogenital infections
- Genital herpes (HSV) — chronic viral infection with recurrences
- Syphilis — systemic bacterial infection with multiple stages
- HIV/AIDS — viral immunodeficiency
- HPV (genital warts) — genital warts and high-risk types
- Trichomonas vaginalis — parasitic vaginal infection
- Mycoplasma hominis — conditionally pathogenic bacterium
- Ureaplasma urealyticum — fertility impact
- Hepatitis B and C — viral liver inflammations
Why is screening important?
- Many STIs are asymptomatic — without regular testing you won't know you're infected
- Preventing complications — untreated infections lead to infertility, chronic pain, cancer
- Protecting partners — timely detection prevents further spread
- Safe pregnancy — screening before and during pregnancy protects the baby
STD diagnostic panel
- PCR panel — Chlamydia, Gonorrhea, Mycoplasma, Ureaplasma, Trichomonas
- Serology — HIV, Syphilis (RPR+TPHA), Hepatitis B and C
- HPV typing — high-risk and low-risk types
- Swab — culture with antibiogram
Prevention
Consistent condom use, regular testing, vaccination (HPV, Hepatitis B), limiting sexual partners, and open communication are key STD prevention measures.

Written by
Dr Slobodanka Petković
Specialist in Gynaecology & Obstetrics · 35+ years of experience
Patients often ask
Annually if sexually active, or after each new partner. More frequently if symptoms are present.
Condoms significantly reduce risk but don't provide 100% protection. HPV and herpes can transmit through skin contact.