Case presentation: Term newborn, appropriate for gestational age, female, normal neonatal screenings, vaginal birth, Apgar ⅞. Diagnosed with congenital syphilis, pulmonary hypertension, convulsive syndrome and altered thyroid-stimulating hormone by maternal levothyroxine use during pregnancy. At maternity, infant presented frequent seizures, receiving levetiracetam phenobarbital, in addition to...