Old 12-30-2008, 08:19 PM   #1 (permalink)
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Default Why do I get tired later in the day

Why is fatigue a common symptom of ALS. Is it related to physical exertion or just to the ALS process.

I feel great in the morning but by the afternoon am tired and it shows in my weak leg

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Old 12-31-2008, 12:19 AM   #2 (permalink)
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Seems like you are pursuing two inquiries: Why do people with ALS experience global fatigue, and why do you feel progressive fatigue during the day?

I don't really know the answer to your first question, but I have been told by at least one well educated person that the answer isn't clear. One common thought is exactly what you stated, that the gradual weakneing of muscles requires the body to work much harder.

Your second question isn't necessarily easier to answer because it depends on what is ailing you. There are a number of neuromuscular related illnesses (like myasthenia gravis) that improve with rest, and it is a good sign what you feel is not ALS.

Best of luck,

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Old 12-31-2008, 05:37 AM   #3 (permalink)
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Its all about energy management.

The days of , "I'm tired , but I just keep going" are done.

I treat my energy like a gas tank .. when its getting empty , I feel tired , the leg flops more , I start to yawn. Napping helps, taking regular vitamins, and a good diet helps. I find snacks , like fruit etc will carry me through.

I am still working daily , though its a desk job. I have learned to delegate and get people to come to me in order to keep the energy up.

Hope this helps.

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Old 12-31-2008, 10:44 AM   #4 (permalink)
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If you have MG or any of the other neuromuscular conditions that affect the chest muscles, you would get more tired as the day goes on due to the ratio of CO to CO2.

As an example, my Bi-Pap helps me maintain energy levels until early evening. Without it, I run out of steam before noon. This is just one of many possible explainations...
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