Neonatal sepsis
Hyperthyroidism/hypothyroidism
Hypocalcemia
Hypoglycemia
Vertically transmitted diseases (viral hepatitis HIV, etc.)
Other withdrawal (caffeine, cocaine, nicotine, amphetamines, SSRIs)
Neonatal abstinence syndrome
Neonatal sepsis
Neonatal hypoglycemia
Hyperthyroidism/hypothyroidism
Non-neonatal hypoglycemia 
Hypocalcemia
Traumatic asphyxia
Hypoglycemia