Eczema is a common skin condition that raises concerns, particularly regarding its potential exacerbation in Hong Kong’s humid climate. Interestingly, moderate humidity can actually benefit the condition by reducing skin dryness, a well-known trigger for eczema. However, it is important to note that humid environments can also promote the growth of mites—microscopic insects that can bite and irritate the skin, potentially aggravating eczema symptoms. Additionally, factors such as stress, exposure to chemicals, and extreme weather conditions (both hot and cold) can influence the severity of eczema. Therefore, it is essential to consider a combination of factors rather than focusing on a single cause.