okay, this is probably a very stupid question, but are you positive it is a tic, and not just your average "the weather is changing," or "it's still flu season," or whatever kind of cough? is the psych the only doc you have seen about it?
i have to ask, because a friend of mine was misdiagnosed by her psych doc as having a coughing tic, due to adderall, when actually, she had bronchitis (and her only symptoms were coughing and fatigue.... the psych doc said the fatigue was due to coughing all night and not getting adequate rest, which made sense at the time.... of course, coughing and fatigue due to bronchitis made a lot more sense....). it was a full month before she bothered going to her regular doc about it!
unless you are absolutely positive your cough is due to a tic, it might be worth having it looked at by a regular doc.
to help with a dry throat and ease a dry cough, hot honey and lemon works wonders (couple of tablespoons of honey and a couple of teaspoons of lemon juice, add 8 ounces of water and heat in the microwave for a couple of minutes).
jake, to solve the booger problem..... stop picking your nose, that's just gross!!!
just kidding, jake (although.... eew!), i actually know what you're talking about with the dry scabby bloody nose thing. vaseline or triple antibiotic ointment on a q-tip a couple of times a day will work wonders for that!