Which factor is commonly associated with the exacerbation of eczema?

Eczema, or atopic dermatitis, can be exacerbated by several environmental and lifestyle factors, and warm temperatures play a nuanced role in this condition. The primary mechanism behind the exacerbation of eczema in warm temperatures is related to sweat and increased skin moisture. When people sweat, it can lead to irritation, which can provoke itching and inflammation in those who are predisposed to eczema.

Additionally, warm environments often coincide with higher humidity, which can lead to the skin becoming overly moist and prone to bacterial or yeast infections. Both of these conditions can further irritate the skin barrier, which is already compromised in individuals with eczema. Therefore, while warm temperatures alone may not directly cause a flare-up, the accompanying increase in sweating and potential for secondary skin infections can exacerbate the condition significantly.

In contrast, cigarette smoke and low humidity are indeed associated with eczema flares, but warm temperatures are specifically linked to the physiological response of sweating and potential for infection. Cold weather, on the other hand, is also known to worsen eczema due to dry air and reduced humidity, causing skin to lose moisture and become more susceptible to irritation. However, the question specifically seeks the most common association, where warm temperatures, due to their effect on sweating and skin conditions, usually lead