Sweating and eczema: a volatile combination.

Sweating , or perspiration, is a natural physiological phenomenon . It is characterised by the secretion of sweat by the sweat glands. Sweating is activated in response to the body's need to lower its temperature, in the face of intense heat, high physical activity or a stressful situation. For this, the autonomic nervous system is mobilised and sends signals triggering the release of sweat. Sweat glands are distributed all over the body, with a higher density in the palms of the hands, soles of the feet and armpits.

Sweating can be a source of irritation on the skin, particularly in areas affected by eczema. Indeed, it can cause burning or tingling sensations. This is largely due to the natural acidity of sweat, which has a pH level between 4 and 6. Additionally, it contains sodium chloride, or salt, which has a drying effect on the skin. Skin dryness is, in itself, an exacerbating factor for eczema, as dry skin, lacking or almost lacking in the hydrolipidic film, is naturally less protected against external aggressions and allergens.

Finally, sweat promotes the colonisation of the skin by staphylococci, microorganisms that thrive particularly in warm and humid environments. Indeed, staphylococci can exacerbate inflammation caused by eczema, thereby worsening the condition. In the event of a staphylococcal infection, it is necessary to consult a healthcare professional. They can provide advice to prevent the spread of the infection and may prescribe antibiotics if needed.