The Triangle of Death: Skin Infections and Why Blood Tests Matter
By Tharb Faisl
“Our cancer screening can be part of a broader longevity health screening, which checks multiple organ systems and long-term risk factors.”
It sounds dramatic, but doctors use the term “Triangle of Death” to describe the area of the face between the corners of the mouth and the bridge of the nose. Infections in this zone are considered higher risk because veins in this region connect directly to the brain. While serious complications are rare, ignoring facial infections in this area can be dangerous.
At Marylebone Diagnostic Centre (MDC) in Central London, we see patients with concerns ranging from skin boils and abscesses to unexplained fevers. Our infection and inflammation blood profiles provide fast answers and reassurance.
Why is the Triangle of Death Dangerous?
The “triangle” covers your nose and upper lip. The blood vessels here connect to the cavernous sinus, a vein at the base of the brain. If an infection spreads here, it can lead to serious complications such as:
- Meningitis
- Brain abscess
- Cavernous sinus thrombosis (a blood clot in the brain’s veins)
While this sounds alarming, it’s important to remember that such cases are very rare. Still, it highlights why untreated skin infections-especially in the face-shouldn’t be ignored.
Common Signs of Infection
Facial infections often start small, but you should take them seriously if you notice:
- Redness, swelling, or pain around the nose or upper lip
- A boil, spot, or abscess that is worsening
- Fever, chills, or feeling generally unwell
- Headache, blurred vision, or dizziness
These symptoms mean it’s time to get checked, as infections can spread faster than you think.
Blood Tests for Infection and Inflammation
At MDC, our doctors recommend targeted blood tests if you present with infection symptoms. These include:
- Full Blood Count (FBC) – checks white blood cells, which rise during infection.
- CRP (C-Reactive Protein) – an inflammation marker that rises with bacterial infections.
- ESR (Erythrocyte Sedimentation Rate) – another inflammation measure used for long-term or chronic issues.
- Culture Tests – when needed, we can identify the exact bacteria or organism causing infection.
Together, these tests give a clear picture of whether you’re fighting a viral or bacterial infection, and whether further treatment is needed.
Who Should Get Tested?
You should consider infection screening if you:
- Have recurrent boils, abscesses, or facial infections.
- Are recovering from a severe infection but still feel unwell.
- Suffer from unexplained fevers or inflammation.
- Have immune system concerns that make you more vulnerable to infection.
At MDC, patients often combine infection testing with general health checks, ensuring a complete overview of their wellbeing.
The Link Between Infections and Other Conditions
Ignoring infection doesn’t just affect your skin. Chronic or repeated infections may also point to:
- Vitamin deficiencies (Vitamin D, B12, Iron)
- Diabetes (high blood sugar can increase infection risk)
- Immune dysfunction
This is why our Marylebone Health Screening Profile (£229) and Cardiac Profile (£299) often include infection and inflammation markers alongside organ health checks.
Case Study – Spotting More Than Just an Infection
A 36-year-old patient visited MDC with recurring facial boils, including one near the “triangle” zone. Blood tests revealed:
- High CRP, suggesting bacterial infection
- Elevated HbA1c, indicating undiagnosed Type 2 Diabetes
This early diagnosis allowed him to begin treatment—not only preventing further infections but also protecting his long-term health.
Why Choose MDC for Infection Testing?
- Fast results – often same-day, so you get answers quickly.
- Central London location – near Baker Street, Harley Street, Marylebone, Paddington, and Euston.
- Comprehensive panels – combine infection tests with health screening, diabetes, or vitamin checks.
- Trusted quality – all results meet the Marylebone High Standard.
- Discreet and supportive care – we know health worries can be stressful, and we aim to reassure.
Book Your Infection Screen Today
Don’t ignore infection symptoms, especially around the face’s “Triangle of Death.” A quick blood test at MDC can rule out serious problems and provide peace of mind.
Book an Infection & Inflammation Profile or a Marylebone Health Screening Profile (£229) today.
Location: 73 Baker Street, Marylebone, London – serving Harley Street, Paddington, Mayfair, and Central London.
Call +44 7495 970109 or book online at marylebonediagnosticcentre.com.
