ALA-D Porphyria, ALAD-Deficiency Porphyria (ADP)

 
ALA-D porphyria is a very seldom, genetic type of Porphyria.
It is caused by a reduced function of the enzyme delta-aminolevulinic acid dehydrase. And therefore will delta-aminolevulinic acid (ALA) in the urine be increased.

The symptoms are very similar to the symptoms caused by AIP (look here)

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