If your pcp diagnoses you with a condition, is it always a good idea to get a second opinion from a specialist?

Up to you . . .: Get a "second opinion" if your family doc refers you. If you decide to get one on your own, you'll probably have to pay out of pocket. Family docs are trained to take care of majority of common conditions so unless yours is rare or complicated, or s/he "abdicates", there's probably no need to see someone else. Also consider checking reliable online sites eg www.mayoclinic.org to be sure up-to-date

Maybe: It really depends on you. Things to think about are how much confidence you have in the PCP, what the issue is and how important it is for others to weigh in. Also do you have insurance and whether it's covered for you. Sometimes you can find good online patient communities who can also weigh in. Check http://www.cfah.org/prepared-patient/make-good-treatment-decisions/should-i-get-a-second-opinion

Sometimes yes: It is only natural to want a second opinion at times. You need to ask yourself why, however, as sometimes it is best to go back to your PCP with the questions you have. If you don't feel satisfied or confident with the response a second opinion may be required. Patient choice is really important here.

Depends on you: If you are happy with the PCP diagnosis and it is straightforward, a specialist will unlikely to add anything. If you are unsure or dissatisfied, sure a second opinion can be useful. Beware multiple opinions can cause confusion nad misunderstandings. Remember too many cooks can ruin the stew,