 Given their healing ability though such diseases would need to be particularly virulent and resistant to immune response, potentially including syphilis, AIDS, and the common cold, though in the latter case the vampire could easily compensate by simply causing the release of additional hormones.Agromaly - Uncontrolled growth, either in general such as with Fess Ferenc, or in specific body parts, such as with Vasagi the Suck before he tore out his jaw and formed his proboscis, is a common "defect" amongst the Wamphyri.Uncontrolled metamorphosis - While rare some vampires over time lose control of their metamorphosis, this condition is not fatal directly but can reduce a vampire so afflicted to a blob like creature with little or no skeletal structure, and unable to pass for human or beast.