07/31/2026
Summer with MS can feel like your body filed a complaint you didn’t authorize.
Here’s what’s going on. When your core temperature climbs, whether from the weather, a workout, a hot shower, or a low-grade fever, your nerves conduct signals a little less efficiently. Symptoms you thought were behind you can come roaring back. Vision gets fuzzy, legs feel like cement, fatigue flattens you. This is Uhthoff’s phenomenon, and while it mimics a relapse, it’s usually a temporary flare that eases once you cool off.
That doesn’t make it any less real or annoying in the moment. Cooling strategies matter. So does timing your movement for the cooler parts of the day instead of white-knuckling through the heat because you think resting means giving up. It doesn’t.
Save this for the next heat wave, and send it to your MS friend who’s been melting. 💙