Seiyuu Megumi Ogata announced that she was recently hospitalised overnight over sudden anaphylaxis. She said that she previously woke up with hives all over her body, while her eyes were swollen and her ears and throat clogged.
The Evangelion lead seiyuu also said that she woke up her family, who then called an ambulance without hesitation. She has now been discharged, and the cause of her anaphylaxis is currently under investigation.
Ogata is famous for voicing Shinji Ikari in Neon Genesis Evangelion. Her other iconic roles include Kurama from Yu Yu Hakusho and Haruka Tenou/ Sailor Uranus from Sailor Moon.
Source: Megumi Ogata’s Twitter account