Lǐjí hòuzhòng shì lìjí de diǎnxíng zhèngzhuàng zhī yī.
Tenesmus is one of the typical symptoms of dysentery.
Tips
memory
Parse as 里急 'inside urgent' (the urge inside) + 后重 'rear heavy' (heaviness/pressure at the rear). The two halves describe the two-part feeling: urgency to go, plus persistent heaviness afterward.
