Muscle painless weakness

Muscle painless weakness refers to a reduction in muscle strength without the presence of pain. In this condition, muscles exhibit reduced power and endurance, making it challenging to perform daily activities that require physical effort. Despite the weakness, individuals do not experience the discomfort or soreness typically associated with muscle strain or injury. This symptom is commonly associated with myasthenia gravis, where the immune system disrupts normal communication between nerves and muscles, leading to episodes of muscle weakness that fluctuate in intensity. The condition often worsens with activity and improves with rest, affecting various muscle groups, especially those involved in voluntary movements like lifting, chewing, and speaking.

Source | Author Doctor Nikas Samuolis, reviewed by Prof. Virginijus Šapoka | Vilnius University | Faculty of Medicine | Head of the Department of Internal Medicine, Family Medicine, and Oncology