If they did not work for you, you were probably using the wrong thing for your illness. It appears that nothing will cure your problem
-> "my ass!".
As far as I can tell, the only problem you have been concerned about is psoriasis which has many different forms. Yours may be genetic for which there is not a cure. Or possibly it is chemically induced and you just have not found the right answer. Even if it is nutritional or parasitic, you have just not found the right way to treat it. Keep looking, the answer is out there somewhere.
>- simply aren't any more effective than placebo treatments.
This is definitely false. There is a serious lack of research in many cases because all of the money goes into profit making drugs.
>- I've wasted thousands of dollars on alternative treatments
Sorry to hear that, but it does appear that you have chosen the wrong alternatives for your problem. Look further and choose wisely.