Cooling Down to Keep Moving: Practical Cooling Strategies for Heat-Sensitive MS Patients

For our patients with multiple sclerosis, especially those who experience the frustrating temporary worsening of symptoms with heat, known as Uhthoff's phenomenon, the ability to exercise can feel like a constant battle. We know that exercise is one of the most effective ways to manage MS symptoms and improve quality of life, yet for up to 80% of our patients, the rise in body temperature during physical activity can trigger a cascade of symptoms that makes them want to avoid it altogether. But what if we could offer them a simple, effective way to stay cool and keep moving? A recent systematic review and meta-analysis from 2023 has shed more light on this very topic, and the findings are incredibly encouraging for us as clinicians and for our patients. The research, which synthesized the results of 13 studies involving 384 people with MS, provides strong evidence that cooling garments are a powerful tool in our arsenal. These aren't just your average ice packs; the studies looked at a variety of cooling technologies, from liquid-perfused vests that circulate cool water to phase-change cooling vests that use special materials to maintain a cool temperature for extended periods. The results were clear: these garments significantly improved walking capacity and functional mobility. For our patients who struggle with fatigue and difficulty walking, this is a game-changer. Imagine being able to walk further, with more confidence, simply by wearing a cooling vest. But the benefits don't stop there. The review also found that cooling garments can lead to improvements in muscular strength and balance in some individuals. While the effect on manual dexterity wasn't as clear, the improvements in larger motor functions are a significant win. And it's not just about objective physical improvements. The studies also showed that cooling garments improved subjective measures like thermal sensation and fatigue. Our patients not only performed better, but they also *felt* better. They felt cooler, less fatigued, and more comfortable during and after activity. This is a crucial piece of the puzzle, as the perception of effort and discomfort can be a major barrier to exercise adherence. What's particularly interesting is that these improvements were seen in both temperate and warm conditions, and both with and without an exercise stimulus. This means that cooling garments can be a valuable tool not just for enabling exercise, but also for managing symptoms on a hot day or during other activities that might raise body temperature. And perhaps one of the most practical takeaways from this research is that no single type of cooling garment was found to be superior to another. This is great news for our patients, as it means they have options. They can experiment with different types of garments – vests, neck wraps, thigh cuffs, even palm cooling devices – to find what is most comfortable, convenient, and effective for them. As clinicians, our role is to educate our patients about these options and empower them to find the cooling strategy that best fits their lifestyle and needs.