Methods for treating diseases using isoindoline compounds

Methods of treating a disease selected from dermatomyositis, prurigo nodularis, pyoderma gangrenosum, alopecia areata, hidradenitis suppurtiva, rosacea, lichen planus, giant cell arteritis, Sjogren's syndrome, gout, chronic prostatitis, posterior uveitis, vulvodynia and interstitial cystitis in a human are disclosed. Specific methods encompass the administration of (+)-2-[1-(3-ethoxy-4-methoxyphenyl)-2-methylsulfonylethyl]-4-acetylaminoisoindoline-1,3-dione, cyclopropyl {2-[(15)-1-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl]-3-oxoisoindolin-4-yl}carboxamide or a combination thereof, or a pharmaceutically acceptable prodrug, metabolite, polymorph, salt, solvate or clathrate thereof.