De or het appelallergie?

The correct Dutch article is:

de appelallergie

How to use appelallergie

the appelallergiede appelallergie
this appelallergiedeze appelallergie
that appelallergiedie appelallergie
our appelallergieonze appelallergie
your appelallergiejouw appelallergie
every appelallergieelke appelallergie
which appelallergie?welke appelallergie?
a big appelallergie / the big appelallergieeen grote appelallergie, de grote appelallergie