- so blindingly obvious really!  Maybe you need to be not English to see it!! 

I guess what he/she meant by the word  "decis" - is  disease  which mean illness in general or health problems...

Maybe what he/she wanna say is " Is there any disease or health problems among your family?"

This is the question ask by other ob-gyne or doctor to any pregnant women. They ask about the history of the pregnant women, about the husband and the family history...

This is just my guess but i dont mean generally about my idea...

yeap any heridatorydisease

Yeah ZulfuLivaneli has the same idea like me about that word "decis"

I wish every language would be as phonetic as Turkish. If things are written down the way they are heard, you have to speak them out loud, to get the original spoken word again

(keeping in mind the nationality of the one who wrote it down).

Terrible language, this English: 

a - ei        crate / neighbour

o - oa       told / boat

f - gh        french / laugh

o - i          women / tipsy

e - ai        went / chair

ite - ight   write / night