There is a mental disorder called Dissociative identity disorder.
Sialectasis -LRB- also termed sialectasia , or siadochiectasis -RRB- is cystic dilation of the ducts of salivary glands .. It may be caused by salivary duct strictures or stones -LRB- sialolithiasis -RRB- .. sialolithiasis. sialolithiasis. It can also rarely be congenital .