 [ Symptoms ] if left untreated can postpartum depression occur after 3 years  this person i am asking about has a history of depression and anxiety issues [ Disease ] not technically although a parent of a teenager can sure have depression and anxiety 13 years later after three years or 13 it not considered post partum depression but it is depression andor anxiety nonetheless this person needs medical help yes a person suffering from postpartum depression can get recurrence of depression whether treated or untreated when it occurred counselling and if required antidepressant medications help