Is a non-blanching rash always serious?

A non-blanching rash does not fade under pressure. Rashes of this kind are a result of bleeding underneath the skin. While they are not always serious, they can sometimes indicate severe conditions, such as meningitis or sepsis. In this article, we will explain what a non-blanching rash is and how to identify one.

Is a non-blanching rash always meningitis?

The meningitis “rash” can start as a blanching rash, but nearly always develops into a non-blanching red, purple or brownish petechial rash or purpura, meaning it will not disappear when pressed.

What does a non-blanching rash mean?

Non-blanching rashes are rashes which do not disappear with pressure, particularly using the ‘glass test’. Most children with a non-blanching rash who are well will not have a serious underlying cause. In many cases, a simple viral illness (often adenovirus) is the final diagnosis.

What does a vascular rash look like?

Common vasculitis skin lesions are: red or purple dots (petechiae), usually most numerous on the legs. larger spots, about the size of the end of a finger (purpura), some of which look like large bruises. Less common vasculitis lesions are hives, an itchy lumpy rash and painful or tender lumps.

Does a vasculitis rash blanch?

Inflammation of the blood vessels (vasculitis) may be caused when antibodies that have attached to antigens in the blood (immune complexes) attach to the blood vessel walls. These purplish spots can be felt in the skin. They do not turn white (blanch) when pressed.

How do you check for non-blanching rash?

Consider checking for non-blanching rashes using the ‘glass test’. This involves pressing the side of a glass or tumbler firmly against the rash to see if the rash fades or loses colour under pressure. A petechial or purpuric rash does not fade.

What does a rash and headache mean?

If you have a headache with a rash, it could be a very serious infection called meningococcal meningitis. Most people recover from this infection, but without proper treatment, it can lead to permanent disability and even death in just a few hours.

How do I know if my rash is meningitis?

The meningitis glass test Press the side of a clear glass firmly against the skin. Spots/rash may fade at first. Keep checking. Fever with spots/rash that do not fade under pressure is a medical emergency.

Is petechial rash serious?

When should I call my doctor? Petechiae can be a sign of a severe illness or medical emergency, especially in children. Seek medical attention if you have pinpoint red dots on the skin and: Confusion, dizziness or loss of consciousness (syncope, or passing out).

Why is purpura non-blanching?

Non-blanching rashes are caused by small bleeds in the vessels beneath the skin, giving a purplish discolouration. Depending on the size of the individual lesions they can be defined as: Petechiae: <5mm diameter (figure 1). Purpura: 5-10mm diameter (figure 2).

What is vasculitis in the brain?

Central nervous system (CNS) vasculitis is a rare disease that causes inflammation of the small arteries and veins in the brain and/or spinal cord. The brain and spinal cord make up the CNS.

What does hypersensitivity vasculitis look like?

New rash with tender, purple or brownish-red spots over large areas. Skin sores mostly located on the legs, buttocks, or trunk. Blisters on the skin. Hives (urticaria), may last longer than 24 hours.