No Symptoms Doesn't Mean No STI – Why Testing Matters

It's Wrong to Assume No Symptoms Means You're Safe. Understand STIs Correctly and Get Tested Properly.

"I have no symptoms, so I'm probably fine"—in fact, this is the most dangerous misconception about sexually transmitted infections (STIs). Many common STIs, such as chlamydia and syphilis, often show almost no noticeable symptoms even after infection. There are countless cases where individuals unknowingly let the infection progress or transmit it to their partners without realizing it.

Halu Clinic is located approximately 1-2 minutes on foot from Jujo Station on the JR Saikyo Line, and is open daily from 9 AM to 9 PM, including weekends and holidays. STI testing and treatment are covered by insurance, and we prioritize patient privacy. We understand that it can be embarrassing or difficult to talk about, but getting tested early is the best course of action. Please feel free to visit us from the Akabane, Higashi-Jujo, Oji, and Itabashi areas.

What are Sexually Transmitted Infections (STIs)?

A sexually transmitted infection (STI) is a general term for diseases caused by bacteria, viruses, parasites, and other microorganisms transmitted through sexual contact. Previously, they were referred to as "venereal diseases," but "sexually transmitted infection" is now the more common term.

While some people may think STIs only affect certain individuals, anyone who engages in sexual activity is at risk of infection. Regardless of age, gender, or number of partners, if you have ever had sexual contact, it is worthwhile to get tested.

Major STIs and Their Symptoms

Chlamydia Infection

This is one of the most common STIs in Japan. Its most significant characteristic is that most infected individuals are almost asymptomatic, making it very common for people to be unaware they are infected.

When symptoms do appear, men may experience urethral itching, mild pain, and discharge, while women may notice changes in vaginal discharge or discomfort in the lower abdomen. However, these symptoms are often minor and easily dismissed as "something feels a little off." If left untreated, men can develop epididymitis (which can cause infertility), and women can develop salpingitis and pelvic inflammatory disease, increasing the risk of infertility and ectopic pregnancy.

Syphilis

In recent years, the number of syphilis cases has rapidly increased nationwide in Japan. The increase is particularly noticeable among young people in their 20s and 30s, especially women. Syphilis is an infection caused by the bacterium Treponema pallidum, and its symptoms change as the disease progresses.

• Primary stage (3 weeks to 3 months after infection): A painless sore or ulcer appears at the site of infection (genitals, mouth, anus, etc.). These often disappear on their own, leading people to mistakenly believe they are cured.
• Secondary stage (3 months to 3 years after infection): Rashes appear all over the body, including the palms of the hands and soles of the feet. This may also be accompanied by fever and general malaise. These rashes also disappear on their own.
• Tertiary stage and beyond: If left untreated for many years, it can cause severe damage to the heart, blood vessels, and nervous system.

Even if symptoms disappear, the bacteria remain in the body, and the ability to transmit the infection persists. If a pregnant woman is infected, it can lead to vertical transmission to the baby (congenital syphilis), making screening during prenatal check-ups crucial.

Gonorrhea Infection (Gonorrhea)

This is an infection caused by the bacterium Neisseria gonorrhoeae. In men, symptoms often appear as urethritis, characterized by severe pain during urination and pus-like discharge. In women, the infection often affects the cervix, and symptoms may be subtle or absent. Pharyngeal infections due to oral sex are also increasing, and infections in the throat are often almost asymptomatic. If left untreated, it can cause infertility and pelvic inflammatory disease.

Genital Herpes

This is an infection caused by the herpes simplex virus (HSV). Blisters and ulcers appear on the genitals and around the anus, causing severe pain. During the initial infection, it may also be accompanied by fever and swollen lymph nodes. Once infected, the virus remains latent in the nerves, and a characteristic feature is recurrent outbreaks when immunity is lowered.

Genital Warts (Condyloma Acuminata)

This is an infection caused by certain types of human papillomavirus (HPV). Wart-like growths appear on the genitals and around the anus. They are often distinctive enough to be noticed by oneself, but small ones can be easily overlooked. HPV also includes types that cause cervical cancer (high-risk types), making regular screening important.

HIV Infection/AIDS

HIV (human immunodeficiency virus) is a virus that attacks immune cells. Immediately after infection, symptoms such as fever, fatigue, and swollen lymph nodes may appear, but after that, the infection remains almost asymptomatic for a long period (several years to over 10 years). With advances in medication, early treatment now allows individuals to live normal lives, but the later the discovery, the more the immune function deteriorates, increasing the risk of developing AIDS. Regular testing is an important habit for early detection and early treatment of this infection.

Trichomoniasis

This is an infection caused by the parasite Trichomonas vaginalis. In women, symptoms such as increased vaginal discharge, foul odor, and itching in the external genitalia may appear, but men are almost asymptomatic. Therefore, this is an infection where men often unknowingly transmit it to their partners.

Why Testing is Necessary Even Without Symptoms

For many STIs, "no symptoms" does not mean "not infected." In fact, many progress without symptoms, leading to the following risks:

• Unknowingly transmitting the infection to your partner.
• If left untreated, it can lead to serious complications such as infertility, ectopic pregnancy, and cancer.
• If infected during pregnancy, it can affect the baby.
• For immune-related infections like HIV, the later the discovery, the more difficult treatment becomes.
• It is possible to be infected with multiple STIs simultaneously.

Instead of thinking "I don't have symptoms, so I don't need to get tested," it's important to adopt the mindset, "Because I don't have symptoms, I should get checked regularly."

Who Should Get Tested?

It's easy to think "this doesn't apply to me," but we recommend that anyone who fits the following descriptions gets tested:

• You have a new partner.
• You had sexual intercourse without a condom.
• Your partner was diagnosed with an STI.
• You had sexual contact with multiple partners.
• You are hoping to get pregnant or are currently pregnant.
• It has been more than a year since your last test.
• You have concerning symptoms around your genitals, mouth, or anus.
• You have had an STI in the past.

Especially for those who are hoping to get pregnant or are currently pregnant, we strongly recommend getting tested early for chlamydia, syphilis, and HIV.

STI Tests Available at Our Clinic

Test Item	Specimen	Insurance Coverage
Chlamydia (Nucleic Acid Detection)	Urine, throat swab, cervical swab	○
Gonorrhea (Nucleic Acid Detection)	Urine, throat swab, cervical swab	○
Syphilis (RPR・TPHA)	Blood	○
HIV Antibody Test	Blood	○ (If symptoms or risk factors are present)
Hepatitis B (HBs antigen)	Blood	○
Hepatitis C (HCV antibody)	Blood	○
Genital Herpes (HSV)	Blood, lesion swab	○
Trichomoniasis (Nucleic Acid Detection)	Urine, vaginal discharge	○
HPV (DNA Genotyping)	Cervical swab	Conditional

Based on your symptoms and situation, you can discuss the necessary test items with our doctor. Even if you don't know what to test for, please come in for a consultation first. Blood test results for visits before 5 PM can be provided as early as the next day.

About Treatment

Most STIs can be successfully treated with appropriate medical care.

• Chlamydia, Gonorrhea, Syphilis, Trichomoniasis: Treated with antibiotics or antimicrobial agents. It is crucial for partners to be treated simultaneously to prevent reinfection.
• Genital Herpes: While it cannot be completely eliminated, antiviral drugs can suppress symptoms and reduce recurrence.
• Genital Warts: Treated with topical medications or liquid nitrogen.
• HIV: Antiretroviral therapy (ART) controls the viral load in the body. Referral to a specialized medical institution is necessary.

It is important to remember that if only one person receives treatment, and their partner remains infected, reinfection can occur. Therefore, ensuring your partner also gets tested and treated is part of the complete approach.

Common Concerns When Visiting the Clinic

"Will anyone find out?"
Medical information is subject to medical confidentiality. Your family or workplace will not be informed. If you use your health insurance card, a detailed statement may be sent to the policyholder of your household. If you are concerned, please consult with the reception staff.

"I feel ashamed visiting the clinic as someone with a partner."
Testing is solely for the purpose of protecting your and your partner's health. If there is any suspicion, getting checked early is for the benefit of both of you.

"Can I visit even if I have no symptoms?"
Absolutely. As a medical institution, we welcome patients who wish to get tested "just to be sure," even without symptoms.

"I have a same-sex partner; can I still visit?"
Yes. Anyone can visit, regardless of their gender or the gender of their partner.

For Those Considering STI Testing and Treatment in Jujo, Akabane, Higashi-Jujo, and Oji

STIs are something that can happen to anyone, even if you think "it doesn't apply to me." Making a habit of regular check-ups, even without symptoms, helps protect your and your partner's health.

Halu Clinic offers STI testing and treatment covered by insurance. We are here to support you through any feelings of embarrassment or difficulty, so please don't hesitate to reach out without carrying the burden alone. We are open daily from 9 AM to 9 PM, including weekends and holidays. While walk-ins are welcome, we prioritize patients with web reservations.

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Halu Clinic｜1F J&MALL, 2-27-1 Kami-Jujo, Kita-ku, Tokyo 114-0034
TEL: 03-6698-2509 ／ Clinic Hours: Daily 9:00〜21:00 (Irregular holidays)