A compound having the following formula (II) or a pharmacologically acceptable salt thereof is used as a P2X
4
receptor antagonist:
wherein each of R
11
and R
12
is hydrogen, C
1-8
alkyl or the like;
R
13
is hydrogen, C
1-8
alkyl or the like;
R
14
is C
1-8
alkoxy, hydroxyl, cyano, a heterocyclic group optionally having a substituent or the like; and
the condensed ring consisting of W
1
and the neighboring benzene ring is naphthalene ring or the like.