👉 Non-fatigable, also known as "non-painful," is a medical term used to describe a condition where an individual has no physical or emotional symptoms that indicate they are experiencing pain. This condition can manifest in various ways, such as numbness, tingling, weakness, and other signs of lack of sensation. Non-fatigable individuals may experience these symptoms due to several reasons, including low levels of certain neurotransmitters, such as serotonin, norepinephrine, or dopamine