Nayami no mushi
悩みの虫

Translation: worry worm

Nayami no mushi lives in your lungs. Its long white body is coiled up like a spring. It is covered with black spots spaced at even intervals. Its drooping eyes make its facial expression appear weary.

This worm loves sour, acidic foods. People who are infected with it experience strong cravings for those flavors, and find themselves constantly reaching for those kind of snacks. They become pessimistic, and even the smallest things cause them to feel a heavy sense of grief.

Treatment for nayami no mushi is accomplished with herbs. Funabarasō (Vincetoxicum atratum) and mokkō (Saussurea costus) are effective.