Most medical license applications and DEA apps only ask the question as it is phrased above, "Do you have any medical conditions which interfere with you ability to competently and safely perform the essential functions of your profession?"
My Arizona license by far had the most questions about physical/mental health (all the other states where I am licensed only asked the question above), but the additional questions were along the lines of have you ever been dx with Bi-polar, schizophrenia, paranoia or any other psychotic disorder; have you been treated or admitted to the hospital for same; have you now or in the past 5 years been addicted to or abused any chemical substance including alcohol, have you been treated or evaluated for a drug or alcohol problem...
Therefore, if your history includes only being on an antidepressant (which I think you will be suprised at the number of your colleagues who are as well), then it will unlikely be a problem.
Lying is a major problem, so if directly asked if you are being treated for depression, I think it better to fess up than be caught in a lie which could result in the license not being issued or being revoked.
I took some time off during residency due to a family member's death and even though it is on my FCVS report and my residency PD's report, it has not caused any problems whatsoever (despite the fact that the leave was for depression).