Interesting. I’ve never heard of such a thing.
I’m not doubting it, just completely unknown to me.
Anaphylactic shock is extremely serious. It can block your airways and prevent you from breathing. It can also stop your heart. This is due to the decrease in blood pressure that prevents the heart from receiving enough oxygen.
This can contribute to potential complications such as:
brain damage
kidney failure
cardiogenic shock, a condition that causes your heart to not pump enough blood to your body
arrhythmias, a heartbeat that is either too fast or too slow
heart attacks
death
In some cases, you’ll experience a worsening of pre-existing medical conditions.
This is especially true for conditions of the respiratory system. For example, if you have COPD, you may experience a lack of oxygen that can quickly do irreversible damage to the lungs.
Anaphylactic shock can also permanently worsen symptoms in people with multiple sclerosis.
https://www.healthline.com/health/anaphylactic-shock#complications