Most common cause of Blood stained diaper in a Neonate is :
Bilharziasis
Sickle cell trait
Meatal stenosis
Urethral hemangioma
It is the answer from exclusion of other options­.


Bilharziasis does not occur in neonatal period.
Sickle cell trait is usually asymptomatic.
Meatal stenosis presents between 3-8 years.


Now we are left with option `d' only.