evidence: Among the nation's youth population, rates of severe depression have increased to 8.7 percent from 5.9 percent in the latest available five-year period, according to the nonprofit advocacy group Mental Health America. Of the 50 states, Wisconsin ranks 47th highest in the share of youth with at least one major depressive episode in the past year. That data is getting particular attention as Wisconsin has ramped up its efforts to address neurological trauma, which has emerged as a leading cause of mental illness, depression, suicide and post-traumatic stress disorders. Those involved in trauma-responsive care, or trying to advance it, are confronting this question: [...] The shortfalls are glaring in Wisconsin. Of Wisconsin’s 72 counties, 48 lack even one practicing child psychiatrist, according to the American Academy of Child & Adolescent Psychiatry. In 2017, Wisconsin ranked 49th out of 50 in the share of youth with at least one major depressive episode who did not receive mental health services, ahead only of Tennessee, according to Mental Health America, which relies on the government's best and most recent surveys.