Is antidepressants bad if you have an avm?

Not necessarily: It's true that ssri-type antidepressants are linked with slightly increased risk of bleeding -- most often in the GI tract, and especially when combined with Aspirin or nsaids. Personally, i've seen one woman develop a petechial skin rash when she added baby Aspirin to prozac (fluoxetine). But there is little evidence linking ssri's to intracerebral bleeding. http://www.ncbi.nlm.nih.gov/pubmed/15794724.