sympathetic morning sickness; sympathetic pregnancy nausea
Rare term for nausea experienced by a partner (often the husband) in sympathy with a pregnant person's morning sickness. Also called 共感つわり or 擬似つわり in more common usage.
When the wife is suffering from morning sickness, the husband sometimes seems to get sympathetic morning sickness.
The word 相悪阻 is not very common, but it refers to the phenomenon known as sympathetic morning sickness.
Compound of 相 (あい, mutual/together) and 悪阻 (つわり, morning sickness). The exact historical derivation is uncertain, but the word describes a shared or sympathetic experience of morning sickness.