"fatigue related"

Losing Strength Over Time? Rare Neuromuscular Diseases: Could It Be Progressing Without You Knowing?

Have you ever felt your legs suddenly lose all strength when going up and down stairs, unlike usual? Or have you been worried because your grip strength felt noticeably weaker when using chopsticks or lifting objects? It feels uneasy to simply blame these muscle changes on age or fatigue. They may be a far more serious signal than you think.