Sexually Transmitted Infections (STIs)

Sexually transmitted infections (STIs) are infections that are primarily spread through sexual contact. These infections can be caused by bacteria, viruses, or parasites, and can affect both men and women. STIs can have serious consequences if left untreated, including infertility, cancer, and increased risk of HIV transmission.

Types of STIs

  • Chlamydia: a bacterial infection that can cause symptoms such as abnormal vaginal discharge, burning during urination, and pelvic pain in women, and discharge from the penis, burning during urination, and testicular pain in men.
  • Gonorrhea: a bacterial infection that can cause symptoms such as abnormal vaginal discharge, burning during urination, and pelvic pain in women, and discharge from the penis, burning during urination, and testicular pain in men.
  • Syphilis: a bacterial infection that can cause symptoms such as a painless sore on the genitals, mouth, or anus, followed by a rash and fever.
  • Genital Herpes: a viral infection that can cause symptoms such as painful blisters or sores on the genitals, buttocks, or thighs.
  • Human Papillomavirus (HPV): a viral infection that can cause symptoms such as genital warts, cervical cancer, and other cancers.
  • HIV: a viral infection that can cause symptoms such as flu-like illness, followed by a long period of latency, and eventually, AIDS (acquired immunodeficiency syndrome).
  • Human Immunodeficiency Virus (HIV): a viral infection that attacks the body's immune system and can lead to AIDS.

Symptoms of STIs

The symptoms of STIs can vary depending on the type of infection. Some common symptoms include:

  • Abnormal vaginal discharge or bleeding
  • Burning during urination
  • Pelvic pain or discomfort
  • Discharge from the penis
  • Painful blisters or sores on the genitals, buttocks, or thighs
  • Fever and chills
  • Swollen lymph nodes in the groin area
  • Rash or lesions on the skin

Treatments for STIs

The treatment for STIs depends on the type of infection. Some common treatments include:

  • Antibiotics: used to treat bacterial infections such as chlamydia, gonorrhea, and syphilis.
  • Antiviral medications: used to treat viral infections such as genital herpes, HPV, and HIV.
  • Topical treatments: used to treat symptoms such as genital warts and skin lesions.
  • Vaccinations: available for some STIs, such as HPV and hepatitis B.
  • Counseling and education: important for preventing the spread of STIs and promoting safe sex practices.

Prevention of STIs

To prevent the spread of STIs, it is essential to practice safe sex. This includes:

  • Using condoms or dental dams during vaginal, anal, or oral sex
  • Getting vaccinated against HPV and hepatitis B
  • Getting tested for STIs regularly
  • Avoiding sharing needles or other equipment for injecting drugs
  • Limiting the number of sexual partners
  • Avoiding sex with someone who has an STI

Complications of Untreated STIs

If left untreated, STIs can lead to serious complications, including:

  • Infertility: in women, untreated chlamydia and gonorrhea can cause scarring in the fallopian tubes, leading to infertility.
  • Cancer: certain STIs, such as HPV, can increase the risk of developing cancer.
  • HIV transmission: having an untreated STI can increase the risk of transmitting HIV.
  • Pregnancy complications: untreated STIs during pregnancy can lead to premature birth, low birth weight, and stillbirth.
  • Neurological problems: certain STIs, such as syphilis, can cause neurological problems if left untreated.

Frequently Asked Questions (FAQs)

What are Sexually Transmitted Infections (STIs)?
STIs are infections that are primarily spread through sexual contact.

How common are STIs?
STIs are relatively common, affecting millions of people worldwide each year.

What are some common types of STIs?
Common STIs include chlamydia, gonorrhea, syphilis, herpes, and human papillomavirus (HPV).

Can STIs be prevented?
STIs can be prevented or reduced by using condoms, practicing safe sex, and getting vaccinated against certain infections like HPV.

What are the symptoms of STIs?
Symptoms of STIs may include discharge, pain, itching, or burning during urination, but some STIs may not have noticeable symptoms.

Can STIs be treated?
Many STIs can be treated with antibiotics or antiviral medications, but treatment depends on the specific infection.

Are STIs curable?
Some STIs, like chlamydia and gonorrhea, are typically curable with treatment, while others, like herpes and HPV, may not be curable but can be managed.

Can STIs cause long-term health problems?
Untreated STIs can lead to long-term health problems, such as infertility, pelvic inflammatory disease, and increased risk of HIV transmission.

How are STIs diagnosed?
STIs are typically diagnosed through physical exams, laboratory tests, and medical history.

Should I get tested for STIs?
It is recommended that individuals who are sexually active get tested for STIs regularly, especially if they have multiple partners or engage in high-risk behaviors.

Article last updated on: 18th October 2025.
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