Later on, as luck would have it, a doctor whom Lu Po-ching describes as a "fortune teller" concluded that it was a disease caused by chiggers found only in Penghu and other outlying islands, and he was able to prescribe the proper cure.
後來幸虧一位被盧柏青形容是「算命先生」的醫生判斷是澎湖等離島才有的恙蟲病，方能對症下藥。