Sexually transmitted infections (STIs)

What are sexually transmitted infections (STIs)?

Sexually transmitted infections (STIs) are a set of infectious diseases that are transmitted from one person to another through sexual contact (vaginally, anally or orally). There are numerous types of STIs, including:

What symptoms do STIs present?

Sexually transmitted infections can cause symptoms, although not always. Some patients may experience the following symptoms:

  • Pain when peeing
  • Unusual discharge from the vagina, penis or anus
  • A rash
  • Itchy genitals
  • Vaginal bleeding
  • Blisters or sores around the genitals
  • Flu-like symptoms
  • Skin growths around the genitals

What causes sexually transmitted infections?

The cause of sexually transmitted infections is either bacteria, parasites, fungi or viruses.

Can STIs be prevented?

Abstinence is the only way to completely prevent STIs, however, making sexual contact safer will also reduce the possibility of contracting an STI. If used properly, condoms can provide effective protection against many STIs. However, whilst condoms protect you from contact with fluids (semen or blood), they may not protect you from skin-to-skin transmission. It is also a good idea to have regular STI health checks if you are sexually active, to allow for early diagnosis and treatment and to stop the spread of STIs among the population. It is also a good idea to have the HPV vaccine, which is currently offered to girls at school.

What is the treatment for STIs?

Not all sexually transmitted infections can be cured. Those that are caused by bacteria, such as chlamydia, are treated with antibiotics. However, those that are caused by a virus, such as genital herpes, treatment is limited to alleviating the symptoms. STIs such as lice or trichomoniasis can be treated with topical medications.

 07-19-2023
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Sexually transmitted infections (STIs)

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Mr Jullien Brady - Obstetrics & gynaecology

Created on: 11-13-2012

Updated on: 07-19-2023

Edited by: Aoife Maguire

What are sexually transmitted infections (STIs)?

Sexually transmitted infections (STIs) are a set of infectious diseases that are transmitted from one person to another through sexual contact (vaginally, anally or orally). There are numerous types of STIs, including:

What symptoms do STIs present?

Sexually transmitted infections can cause symptoms, although not always. Some patients may experience the following symptoms:

  • Pain when peeing
  • Unusual discharge from the vagina, penis or anus
  • A rash
  • Itchy genitals
  • Vaginal bleeding
  • Blisters or sores around the genitals
  • Flu-like symptoms
  • Skin growths around the genitals

What causes sexually transmitted infections?

The cause of sexually transmitted infections is either bacteria, parasites, fungi or viruses.

Can STIs be prevented?

Abstinence is the only way to completely prevent STIs, however, making sexual contact safer will also reduce the possibility of contracting an STI. If used properly, condoms can provide effective protection against many STIs. However, whilst condoms protect you from contact with fluids (semen or blood), they may not protect you from skin-to-skin transmission. It is also a good idea to have regular STI health checks if you are sexually active, to allow for early diagnosis and treatment and to stop the spread of STIs among the population. It is also a good idea to have the HPV vaccine, which is currently offered to girls at school.

What is the treatment for STIs?

Not all sexually transmitted infections can be cured. Those that are caused by bacteria, such as chlamydia, are treated with antibiotics. However, those that are caused by a virus, such as genital herpes, treatment is limited to alleviating the symptoms. STIs such as lice or trichomoniasis can be treated with topical medications.

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