hit a raw nerve
US /hɪt ə rɔ nɜrv/
UK /hɪt ə rɔ nɜrv/

1.
tocar una fibra sensible, tocar un punto delicado
to upset someone by referring to a sensitive topic
:
•
His comment about her failed business really hit a raw nerve.
Su comentario sobre su negocio fallido realmente tocó una fibra sensible.
•
Be careful what you say; you might hit a raw nerve with him about his divorce.
Ten cuidado con lo que dices; podrías tocar una fibra sensible con él sobre su divorcio.