On one half of the register, the cause of death appears as “Fraissen” with two s’s.
On the other half, the word appears as “Fraisen” with one s.
This 2011 post on the German-Bohemian ancestry forum speculates that it could mean epileptic seizures, measles, or just some vague description that the parish priest or clerk wrote as a catch all phrase.
What do you think?