讳疾忌医

1. • hiding a sickness for fear of treatment (idiom) fig. concealing a fault to avoid criticism
2. • to keep one's shortcomings secret
3. • to refuse to listen to advice

Character by character

• 讳(huì)avoid mentioning
• 疾(jí)disease
• 忌(jì)be jealous of
• 医(yī)medical