-aminolaevulinate is one of two main precursors to the substance that causes this uncommon disease.  
-aminolaevulinate is one of two main precursors to the substance that causes this uncommon disease.  Its varieties include erythropoietic proto-, cutanea tarda, plumbo-, variegate, and acute intermittent types. In an acute attack, abdominal pain and fainting are caused by peripheral neuropathy, which also leads to panic attacks, paralysis, and delusions. Light sensitivity leads to easily blistered and scarred skin. Tetrapyrroles such as heme build up in the blood because of improper processing of ALA and/or porphobilinogen. For ten points, name this disease that might have contributed to the vampire myth because light-shy suffers might treat themselves by drinking blood whose most famous victim was George III.
-aminolaevulinate is one of two main precursors to the substance that causes this uncommon disease.  
Porphyria