As temperatures rise across the UK, many people are noticing their rings feeling tighter and shoes becoming uncomfortably snug. This common phenomenon, known as heat oedema, causes swelling in the hands, feet and ankles, according to general practitioners.
Dr Naveed Asif, a GP at The London General Practice, explains: “When temperatures rise, our bodies work hard to cool down by widening blood vessels. This process can lead to increased blood flow to our limbs, causing fluid to leak into surrounding tissues, which is why you might notice that extra puffiness.” The condition can be exacerbated by high altitude or humidity, which affect fluid movement and the body's ability to cool down through sweating.
Symptoms of oedema include swollen or puffy ankles, feet or legs, shiny or stretched skin, discomfort, stiffness and dents when pressing on the skin, according to the NHS. While anyone can experience heat oedema, pregnant women, older adults and those with certain health conditions are more prone. Dr Chun Tang, GP at Pall Mall Medical, notes that eating salty foods and prolonged sitting or standing in heat can also contribute.
To manage swelling, doctors recommend elevating legs, moving around regularly, wearing loose shoes, keeping cool with fans or air conditioning, and using compression socks. Drinking more water can help the body retain less fluid, and cold baths after exercise can constrict blood vessels to reduce swelling. However, if swelling persists, worsens, or is accompanied by shortness of breath, chest pain, or skin changes, it is important to see a GP to rule out underlying conditions such as heart, kidney or liver problems.
