Q. Can I (a person that is prone to serious seizures) get a heter for buckwheat and  or quinoa and or chick peas during Pesach. Because I eat buckwheat every day and its a part of kitniot. I was told by doctors that I need to avoid carbohydrates and eat as much as protein as possible.
A. Despite the name, buckwheat is not related to wheat, as it is not a grass. Buckwheat is referred to as a pseudocereal because its seeds’ culinary use is the same as cereals, owing to their composition of complex carbohydrates. Therefore, as quinoa or chick peas, it is kitnios.
Horav Shlomo Miller’s Shlit’a opinion is that for someone who is clearly chronically ill and subject to seizures, it is permitted to consume kitnios, especially in our dangerous pandemic times when one has to do everything possible to preserve one’s health.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller Shlit’a