【喻】砍掉腳趾頭以免去疥癬之害（沙蟲：疥蟲）。比喻避小害而失大利；因噎廢食。

a metaphor for going through excessive and drastic measures unnecessarily in order to avoid a small problem; literally 'cut off one's toes to avoid sandworms'; palliative; something that treats the symptom but not the underlying problem