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Sexually transmitted infections (STIs)

Sexually transmitted infections (STIs) are infections passed through sexual contact. Many cause mild or no symptoms but can lead to serious health problems if left untreated.

If these symptoms are severe, persistent or worsening, seek medical advice promptly.

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Prescription review online

A doctor will review your case and issue a prescription if medically appropriate.

Talk to a doctor online

Talk to a doctor online

Discuss your symptoms and possible next steps with a doctor online.

This page provides general information and does not replace a doctor’s consultation. If symptoms are severe, persistent or worsening, seek medical advice promptly.

Sexually transmitted infections (STIs) are common and can be passed on during sex or through sexual contact. They can usually be treated at a sexual health clinic.

Symptoms of a sexually transmitted infection (STI)

Symptoms of a sexually transmitted infection (STI) can include:

  • an unusual discharge from your vagina, penis or anus
  • pain when peeing
  • lumps or skin growths around your genitals or bottom (anus)
  • a rash
  • unusual vaginal bleeding
  • itchy genitals or anus
  • blisters, sores or warts around your genitals or anus
  • warts in your mouth or throat, but this is very rare

How soon symptoms appear depends on the type of STI you have.

Many STIs have no symptoms. This means you can have an STI without knowing it and infect your partner during sex.

The only way to know for sure is to get tested.

STIs can take up to 7 weeks after you have unprotected sex to show up on a test. If you do not have symptoms, it’s best to wait 7 weeks before getting tested.

 Go to a sexual health clinic if: 

  • you think you may have an STI
  • a sexual partner has symptoms of an STI
  • you're worried after having sex without a condom
  • you're pregnant with symptoms of an STI
  • you're having casual sex without a condom with new partners – you may be at risk of HIV and other STIs

Do not have sex, including oral sex, without using a condom until you've had a check-up or been tested.

Why you should go to a sexual health clinic

You can see a GP, but they'll probably refer you to a sexual health clinic if they think you have an STI.

You do not usually need a GP referral or an appointment for a sexual health clinic, but contact the clinic first to check.

Doctors and healthcare professionals are there to help you, so try not to feel uncomfortable about sharing information about your sexual activities or sexuality.

You do not need to give your real name or tell staff the name of your GP surgery if you do not want to. No information about your visit to the clinic will be shared with the GP or anyone else outside the clinic unless you ask for it to be.

You can ask to see a female or male doctor or nurse if you wish.

What happens at a sexual health clinic

If you think you have a sexually transmitted infection (STI), the doctor or nurse at the sexual health clinic:

  • will ask you about your sex life
  • may ask to look at your genitals or anus
  • will tell you what tests they think you need

These tests can include:

  • testing a sample of your pee
  • blood tests
  • testing a sample of cells taken from the urethra (the tube that pee comes out of), using a small cotton bud (swab)
  • testing a sample of cells from inside your vagina or anus using a small cotton bud (swab)

Some clinics offer home testing kits for some STIs.

If tests show you have an STI, you should tell your current sexual partner, or partners, and any ex-partners so they can get tested and treated as well.

If you do not want to do this, the clinic can usually do it for you without naming you.

Treatment for sexually transmitted infections (STIs)

Most sexually transmitted infections (STIs) need treatment. The treatment you have will depend on which STI you have.

Many STIs are treated with antibiotics.

Always finish the course of treatment prescribed for you or it may not work properly.

Do not have sex (including oral sex) until you and your partner or partners have finished treatment.

 Important 

If you need treatment, it’s important to tell your current and previous sexual partner (or partners). Sexual health clinics may be able to help you contact them anonymously.

Common types of sexually transmitted infection (STI)

There are different types of sexually transmitted infection (STI), including:

Consult with a doctor about Sexually transmitted infections (STIs)

Consult with a doctor about Sexually transmitted infections (STIs)

Discuss your symptoms and possible next steps with a doctor online.

Online doctors for Sexually transmitted infections (STIs)

Discuss your symptoms and possible next steps for Sexually transmitted infections (STIs) with a doctor online.

5.0 (4)
Doctor

Tomasz Grzelewski

Dermatology 21 years exp.

Dr Tomasz Grzelewski is an MD, PhD specialist in allergy, paediatrics, general practice and sports medicine, with a clinical focus on dermatology, endocrinology, allergology and sports-related health. He has more than 20 years of clinical experience and completed his medical training at the Medical University of Łódź, where he defended his PhD thesis with distinction. His doctoral research was recognised by the Polish Society of Allergology for its innovative contribution to the field. Throughout his career, he has gained extensive expertise in diagnosing and managing a wide range of allergic and paediatric conditions, including modern allergen desensitisation techniques. For five years, Dr Grzelewski served as the Head of two paediatric departments in Poland, managing complex clinical cases and leading multidisciplinary teams. He also worked in medical centres in the United Kingdom, gaining experience across both primary care and specialist environments. With over a decade of telemedicine experience, he has provided online consultations across Europe and is valued for his clear, structured and evidence-based medical guidance. Dr Grzelewski is actively involved in clinical programmes focused on modern anti-allergic therapies. As a Principal Investigator, he leads research projects on sublingual and oral allergen desensitisation, supporting evidence-based progress in allergy treatment for both children and adults. In addition to his background in allergology and paediatrics, he completed dermatology studies through the Cambridge Education Group (Royal College of Physicians of Ireland) and a Clinical Endocrinology course at Harvard Medical School. This advanced training enhances his ability to manage skin manifestations of allergies, atopic conditions, urticaria, endocrine-related symptoms and complex immunological reactions. Patients commonly seek his care for: 

  • seasonal and perennial allergies
  • allergic rhinitis and chronic nasal symptoms
  • asthma and breathing difficulties
  • food and medication allergies
  • urticaria, atopic dermatitis and skin reactions
  • recurrent infections in children
  • sports-related health questions
  • general family medicine concerns

Dr Tomasz Grzelewski is known for his clear communication style, structured medical approach and ability to explain treatment options in a concise and accessible way. His multidisciplinary background across allergy, paediatrics, dermatology and endocrinology allows him to provide safe, up-to-date and comprehensive care for patients of all ages.

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Doctor

Alina Tsurkan

Family medicine 13 years exp.

Dr. Alina Tsurkan is a licensed family medicine physician based in Portugal, offering online consultations for adults and children. She provides professional primary care, with a focus on prevention, accurate diagnosis, and long-term management of acute and chronic conditions.

Dr. Tsurkan supports patients with a wide range of health issues, including:

  • Respiratory infections: cold, flu, bronchitis, pneumonia, and lingering coughs.
  • ENT conditions: sinusitis, tonsillitis, otitis (ear infections), sore throat, allergic rhinitis.
  • Eye conditions: allergic or infectious conjunctivitis, red eyes, irritation.
  • Digestive issues: acid reflux (GERD), gastritis, irritable bowel syndrome (IBS), constipation, bloating, nausea.
  • Urinary and reproductive health: urinary tract infections (UTIs), cystitis, prevention of recurrent infections.
  • Chronic diseases: hypertension, elevated cholesterol, weight management.
  • Neurological complaints: headaches, migraines, sleep disturbances, fatigue, general weakness.
  • Children’s health: fever, infections, digestive issues, follow-ups, vaccination guidance.

She also provides:

  • IMT medical certificates for driving licence exchange in Portugal.
  • Personalised preventive care and wellness consultations.
  • Interpretation of test results and medical reports.
  • Follow-up care and medication review.
  • Support in managing multiple coexisting conditions.
  • Remote prescription management and medical documentation.

Dr. Tsurkan’s approach is evidence-based and holistic. She works closely with each patient to develop an individualised care plan that addresses both symptoms and root causes. Her goal is to empower patients to take control of their health and maintain well-being through lifestyle adjustments, routine check-ups, and early intervention.

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Doctor

Yevgen Yakovenko

General surgery 12 years exp.

Dr. Yevgen Yakovenko is a licensed surgeon and general practitioner in Spain and Germany. He specialises in general, paediatric, and oncological surgery, internal medicine, and pain management. He offers online consultations for adults and children, combining surgical precision with therapeutic support. Dr Yakovenko works with patients across different countries and provides care in Ukrainian, Russian, English, and Spanish.

Areas of medical expertise:

  • Acute and chronic pain: headaches, muscle and joint pain, back pain, abdominal pain, postoperative pain. Identifying the cause, selecting treatment, and creating a care plan.
  • Internal medicine: heart, lungs, gastrointestinal tract, urinary system. Management of chronic conditions, symptom control, second opinions.
  • Pre- and postoperative care: risk assessment, decision-making support, follow-up after surgery, rehabilitation strategies.
  • General and paediatric surgery: hernias, appendicitis, congenital conditions, both planned and urgent surgeries.
  • Injuries and trauma: bruises, fractures, sprains, soft tissue damage, wound care, dressing, referral when in-person care is required.
  • Oncological surgery: diagnosis review, treatment planning, and long-term follow-up.
  • Obesity treatment and weight management: a medical approach to weight loss, including assessment of underlying causes, evaluation of comorbidities, development of a personalised plan (nutrition, physical activity, pharmacotherapy if needed), and ongoing progress monitoring.
  • Imaging interpretation: analysis of ultrasound, CT, MRI, and X-ray results, surgical planning based on imaging data.
  • Second opinions and medical navigation: clarifying diagnoses, reviewing current treatment plans, helping patients choose the best course of action.

Experience and qualifications:

  • 12+ years of clinical experience in university hospitals in Germany and Spain.
  • International education: Ukraine – Germany – Spain.
  • Member of the German Society of Surgeons (BDC).
  • Certified in radiological diagnostics and robotic surgery.
  • Active participant in international medical conferences and research.

Dr Yakovenko explains complex topics in a clear, accessible way. He works collaboratively with patients to analyse health issues and make evidence-based decisions. His approach is grounded in clinical excellence, scientific accuracy, and respect for each individual.

If you are unsure about a diagnosis, preparing for surgery, or want to discuss your test results – Dr Yakovenko will help you evaluate your options and move forward with confidence.

5.0 (32)
Doctor

Anna Biriukova

General medicine 6 years exp.

Dr Anna Biriukova is an internal medicine doctor with clinical experience in cardiology, endocrinology, and gastroenterology. She provides online consultations for adults, offering expert medical support for heart health, hormonal balance, digestive issues, and general internal medicine.

Cardiology – Diagnosis and treatment of:

  • High blood pressure, blood pressure fluctuations, and cardiovascular risk prevention.
  • Chest pain, shortness of breath, arrhythmias (tachycardia, bradycardia, palpitations).
  • Leg swelling, chronic fatigue, reduced exercise tolerance.
  • EKG interpretation, lipid profile evaluation, cardiovascular risk assessment (heart attack, stroke).
  • Post-COVID-19 cardiac monitoring and care.
Endocrinology – Diabetes, thyroid, metabolism:
  • Diagnosis and management of type 1 and type 2 diabetes, and prediabetes.
  • Individual treatment plans including oral medications and insulin therapy.
  • GLP-1 therapy– modern pharmacological treatment for weight management and diabetes control, including drug selection, monitoring, and safety follow-up.
  • Thyroid disorders – hypothyroidism, hyperthyroidism, autoimmune thyroid diseases (Hashimoto’s, Graves’ disease).
  • Metabolic syndrome – obesity, lipid disorders, insulin resistance.
Gastroenterology – Digestive health:
  • Abdominal pain, nausea, heartburn, gastroesophageal reflux (GERD).
  • Stomach and intestinal conditions: gastritis, irritable bowel syndrome (IBS), indigestion.
  • Management of chronic digestive disorders and interpretation of tests (endoscopy, ultrasound, labs).
General internal medicine and preventive care:
  • Respiratory infections – cough, colds, bronchitis.
  • Lab test analysis, therapy adjustments, medication management.
  • Adult vaccinations – planning, contraindications assessment.
  • Cancer prevention – screening strategies and risk assessment.
  • Holistic approach – symptom relief, complication prevention, and quality of life improvement.
Dr Biriukova combines internal medicine with specialist insight, offering clear explanations, personalised treatment plans, and comprehensive care tailored to each patient.
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