Complex sentence: Problems related to DβH deficiency often first appear during a complicated perinatal period with episodes of vomiting, dehydration, hypotension, muscle hypotonia, hypothermia, and hypoglycemia.
Split into simpler sentences: Problems related to DβH deficiency often first appear as complications shortly after birth. Post-natal episodes may include vomiting, dehydration, hypotension, muscle hypotonia, hypothermia, and hypoglycemia.