You found an article in PubMed but it requires payment to access it.  Now what? 

You can search for it in the library to see if it is available through one of the databases that the library subscribes to!

In the search box on the Purdue Global Library's homepage, put the title of the article into the search box: Malignancy-associated pruritus

Click on the magnifying glass to perform the search..

If the library does have access to it, it will be the first item in the results list.  Sometimes it is down the list a little ways but usually it is the first item.