AHUS Symptoms... What Are They?

Early detection and treatment are key! Atypical hemolytic uremic syndrome (aHUS) is a rare and serious medical condition that affects the blood, kidneys, and blood vessels, leading to various complications. Recognizing the symptoms and seeking prompt medical attention is crucial for managing aHUS effectively.

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Symptoms of aHUS

Hemolytic Anemia

aHUS can cause the breakdown of red blood cells, leading to anemia. Symptoms may include fatigue, weakness, and pallor (pale skin).


Low platelet count can result in easy bruising, bleeding, and prolonged bleeding from minor injuries.

Kidney Dysfunction

aHUS most often affects the kidneys, leading to symptoms such as decreased urine output, swelling in the legs and face, high blood pressure, and fluid retention.

Abdominal Pain

Some individuals with aHUS may experience abdominal pain, which can be severe.

Neurological Symptoms

In rare cases, aHUS can affect the nervous system, leading to confusion, seizures, and stroke-like symptoms.

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When to Seek Medical Help

It’s essential to seek immediate medical attention if you or someone you know experiences any of the following symptoms.

Severe Abdominal Pain

If you have sudden and severe abdominal pain, it could indicate aHUS or another serious medical condition.

Blood in Urine

Hematuria (blood in the urine) is a concerning symptom, especially if it’s accompanied by decreased urine output or changes in urine color.

Neurological Symptoms

Any sudden onset of confusion, seizures, or stroke-like symptoms should be treated as a medical emergency.

Bleeding or Bruising

If you notice unexplained bleeding, easy bruising, or prolonged bleeding after minor injuries, seek medical attention promptly.

Swelling and High Blood Pressure

Swelling in the legs and face, along with high blood pressure, can be indicative of kidney dysfunction and should be evaluated by a healthcare professional.

Flu-Like Symptoms

Sometimes, aHUS can begin with symptoms resembling the flu, such as fatigue and weakness. If these symptoms persist or worsen, it’s important to consult a doctor.

Existing Diagnosis of aHUS

If you’ve been previously diagnosed with aHUS and experience any change in your condition or new symptoms, contact your healthcare provider for guidance.


Remember that aHUS is a rare condition, and its symptoms can overlap with other medical issues. If you suspect aHUS or are concerned about your health, it’s crucial to consult a healthcare professional immediately for a thorough evaluation and diagnosis. Early detection and treatment are key to managing aHUS effectively and preventing complications.

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