Dudes, there are so many strains out there that you would not believe and everyone does something a little different. Now I am talking about Med quality not dirt weed. A quick guide: indica, sativa, and hybrids. All Kush's are hybrids, it depends on what the cross breed is to determine how heavy sativa or indica that it is. Now, for example white widow is a hybrid that is amazing for pain and creativity. Grapefruit Kush is a hybrid made from Grapefruit strain out of canada crossed with OG Kush it is also good for pain. Now as far as panic attack, you are probably hitting a strong sativa, go for hybrids that are a fairly equal mix. Also, for the panic attacks do you only smoke a night? If so try to smoke earlier in the day and start with small amounts and see if that helps. Only time I ever get that panic feeling is if I smoke a sativa heavy before I go to bed. Hope that makes since and helps some.