Objective To propose a clinical absolute and relative score system for myasthenia gravis and make its evaluation. Methods The system consisted of two parts, the absolute scores and the relative scores. The absolute scores included 8 items: ptosis, palpebra superior fatigability, disability of ocular motion, fatigability of the upper and lower extremity muscles, disability of the facial muscles, chewing difficulties, dysphagia and disability of the respiratory muscles. Each item had five possible scores, r...