You can also find a comprehensive list of dermatology journals at medbioworld.
When you go to the website of a journal there is often a search facility, so you can search the contents for relevant articles. You will usually get the titles of articles, often the abstracts, but more rarely the full article. If you wish to obtain the full article there is often a cost element involved, but you may also obtain a copy by writing to the author.
Alternatively, you can find facilities which search the contents of a wider range of journals at, for instance, PubMed.