Christina Applegate shares a message on her 50th birthday after MS diagnosis No Comments Uncategorized Christina Applegate is marking a milestone birthday after revealing her multiple sclerosis diagnosis in August. Christina Applegate is marking a milestone birthday after revealing her multiple sclerosis diagnosis in August. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to print (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on WhatsApp (Opens in new window)