Ask-a-Dave's-Gardener: Help with violent \'scabs\' on my succulent?, 4 by anilev

anilev wrote:
Does anybody have an idea what could be these \'scabs\' on my ghosty? First I noticed only two which I thought could be due to mechanical damage since my plants are spending the winter on a south facing window in a barn with construction going on. So my first idea was that something external had scarred them. But now I see that the scabs just keep multiplying and I\'m out of ideas! Is something eating my ghosties? These blisters appear on old and young leaves, bottom and top. Thank you.