Symptoms A-Z

Flat, Blue/Purple Rash Symptoms, Causes & Common Questions

Understand your flat, blue/purple rash symptoms, including 3 causes and common questions.

Flat, Blue/Purple Rash Symptom Checker

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3 Possible Flat, Blue/Purple Rash Causes

The list below shows results from the use of our quiz by Buoy users who experienced flat, blue/purple rash. This list does not constitute medical advice and may not accurately represent what you have.

Wegener's granulomatosis

Wegener's granulomatosis, more recently re-named granulomatosis with polyangiitis, is a disorder in which a dysregulated immune system causes widespread inflammation of small blood vessels throughout the body. This results in slower or impaired blood flow to you...

Flat, Blue/Purple Rash Symptom Checker

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Immune thrombocytopenia

Platelets are tiny cells in the blood that help form blood clots and seal minor cuts and wounds. Immune thrombocytopenia, also known as immune thrombocytopenic purpura (ITP), is a condition where there are not enough platelets in the blood, causing easy bruising and tiny reddish purple dots on the skin from bleeding under the surface.

Rarity: Rare

Top Symptoms: being severely ill, rectal bleeding, red stool, unexplained/excessive bleeding from cuts or wounds, unexplained bruising

Symptoms that always occur with immune thrombocytopenia: being severely ill

Urgency: Primary care doctor

Churg-strauss syndrome

Churg-Strauss syndrome (CSS) is an extremely rare disease which involves inflammation in certain types of cells in the blood or in tissues. This inflammation causes injury to many organ systems, and the cause of CSS is not known well by doctors.

Rarity: Ultra rare

Top Symptoms: fatigue, abdominal pain (stomach ache), muscle aches, shortness of breath, cough

Urgency: Primary care doctor

Questions Your Doctor May Ask About Flat, Blue/Purple Rash

To diagnose this condition, your doctor would likely ask the following questions:

  • Any fever today or during the last week?
  • What color is the skin change?
  • Are there bumps on your rash?
  • Have you been feeling more tired than usual, lethargic or fatigued despite sleeping a normal amount?

The above questions are also covered by our A.I. Health Assistant.

If you've answered yes to one or more of these questions

Take a quiz to find out what might be causing your flat, blue/purple rash

Flat, Blue/Purple Rash Symptom Checker Statistics

People who have experienced flat, blue/purple rash have also experienced:

  • 3% Fatigue
  • 2% Feeling Itchy Or Tingling All Over
  • 2% Big Toe Pain

People who have experienced flat, blue/purple rash were most often matched with:

  • 33% Wegener'S Granulomatosis
  • 33% Immune Thrombocytopenia
  • 33% Churg-Strauss Syndrome

People who have experienced flat, blue/purple rash had symptoms persist for:

  • 29% Over a month
  • 27% Less than a week
  • 25% Less than a day

Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

Flat, Blue/Purple Rash Symptom Checker

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Disclaimer: The article does not replace an evaluation by a physician. Information on this page is provided as an information resource only, and is not to be used or relied on for any diagnostic or treatment purposes.