Collocations for claustrophobic - adj.

be, feel, seem
I felt a little claustrophobic in the tiny room.

become, get
make sb
Crowds make me claustrophobic.

find sth
I find that building intensely claustrophobic.

extremely, fairly, very, etc.
The atmosphere was somewhat claustrophobic.

intensely
a little, slightly, etc.

Claustrophobic is used with these nouns:
room