10/06/2018
HEAT INTOLERANCE IN NMO
Did you know that for years, the “hot bath” test was used to diagnose multiple sclerosis? And while NMO is NOT MS, we share similar issues when it comes to heat intolerance. So, when I talk about the “hot bath test”, what happened is that doctors would immerse patients that they thought had MS in a tub of hot water and if their symptoms worsened the doctors would take that as a diagnosis of MS. So, it stands to reason that the same could be said of NMO, right?
Many NMO patients experience a temporary worsening of symptoms when the weather is hot or humid, even when they run a fever. It comes from an elevation in our bodies core temperature, which impairs the ability of demyelinated nerves to conduct electrical impulses.
What this means for NMO patients is that if you’ve had Optic Neuritis in the past, and have demyelination on the optic nerve, your vision may become blurry. It may even become painful. If you have had Transverse Myelitis in the past, and have demyelination in those areas, you may find yourself getting wobbly on your feet, tingly, or even loose sensation to areas you have been affected in the past.
What you need to know is that these heat-related symptoms are TEMPORARY! The heat generally only produces temporary worsening of symptoms. It does NOT mean that you are having more disease activity. These symptoms will generally reverse themselves quickly when the source of increased temperature is removed.
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What are some strategies you can use to ease the effects of heat intolerance?
• Stay in air-conditioned environments during periods of extreme heat and humidity.
• Use cooling products such as vests, neck wraps, and bandana during exercise or outdoor activity.
• Wear lightweight, loose, breathable clothing.
• Drink cold drinks, chew on ice, or eat popsicles.
• Use an oscillating fan or air conditioning during indoor exercise.
• Exercise in a cool pool (