Weakness of the brain.

मस्तिष्क की कमजोरी

English Usage: The patient was diagnosed with encephalasthenia, which explained his cognitive difficulties.

Hindi Usage: रोगी को मस्तिष्क की कमजोरी का निदान हुआ, जिसने उसकी संज्ञानात्मक कठिनाइयों को समझाया।