Pegylated interferon-a drugs used to manage hepatitis C can cause major depression. Preventative use of the antidepressant, escitalopram or Lexapro, may be the solution for some patients.

As if low-income, HIV-positive, pregnant women don't have enough on their plates, many also have to contend with depression - though it's possible not enough doctors are noticing.

Depressive symptoms may be present in patients with hepatitis C before they begin treatment. But research suggests that the hepatitis C drug, interferon, also contributes to depression.