|A few hours old with her Auntie|
Simplistically, Microcephaly means having a clinically small head. Look it up and you see that, like many complex conditions, there are multiple causes including chromosomal and infection. Holoprosencephaly is listed 17th on the list of chromosomal causes on Wikipedia. Mojo has a microcephalic head because the two hemispheres of her brain are fused at the front. Her horseshoe shaped brain is small and therefore, her head is small and for us, aside from occasional hat shopping incidents, I don't give the visuals of it much thought.
- a shortcoming, imperfection, or lack:
Imperfect, without question,
Defective, absolutely not.