<unk>  is diagnosed by checking the serum chloride level, electrolytes, glucose, BUN and creatinine, as well as symptoms such as psychosis. Bromine is also radiopaque, so an abdominal X-ray may also help in the diagnosis.
Bromism
Variegation 
Caudal duplication
Heteroxeny
Isodisomy
Low copy repeats
Heteroplasmy
Polyploidy