Bulging anterior fontanel is/are seen in –
Rickets
CMV infection
Tetracycline therapy
All of these
Bulging anterior fontanel 

The fontanel is normally flat or slightly depressed relative to the frontal and parietal bones and is pulsatile.
Bulging fontanel is a reliable sign of raised ICT during infancy.
The pulsations may disappear when fontanel becomes tense due to marked elevation of ICT.