Hawkinsinuria, also called 4-Alpha-hydroxyphenylpyruvate hydroxylase deficiency, is an autosomal dominant metabolic disorder affecting the metabolism of the sulfur amino acid hawkinsin. It is characterized by transient metabolic acidosis and tyrosinemia. Hawkinsinuria has an autosomal dominant pattern of inheritance. A group of disorders which have in common elevations of tyrosine in the blood and urine secondary to an enzyme deficiency. Type I tyrosinemia features episodic weakness, self-mutilation, hepatic necrosis, renal tubular injury, and seizures and is caused by a deficiency of the enzyme fumarylacetoacetase. Type II tyrosinemia features mental retardation, painful corneal ulcers, and keratoses of the palms and plantar surfaces and is caused by a deficiency of the enzyme TYROSINE TRANSAMINASE. Type III tyrosinemia features mental retardation and is caused by a deficiency of the enzyme 4-HYDROXYPHENYLPYRUVATE DIOXYGENASE.
* Metabolic acidosis * Failure to thrive * Irritability * Rapid breathing * Unusual body odor