Catalyzes the hydroxylation of dopamine to noradrenaline (also known as norepinephrine), and is thus vital for regulation of these neurotransmitters

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Orthostatic hypotension 1

A form of orthostatic hypotension due to congenital dopamine beta-hydroxylase deficiency. Orthostatic hypotension, also known as postural hypotension, is a finding defined as a 20-mm Hg decrease in systolic pressure or a 10-mm Hg decrease in diastolic pressure occurring 3 minutes after a person has risen from supine to standing. Symptoms include dizziness, blurred vision, and sometimes syncope. ORTHYP1 is an autosomal recessive condition apparent from infancy or early childhood and characterized by low plasma and urinary levels of norepinephrine and epinephrine, and episodic hypoglycemia.

Catalyzes the decarboxylation of L-3,4-dihydroxyphenylalanine (DOPA) to dopamine and L-5-hydroxytryptophan to serotonin

Aromatic L-amino-acid decarboxylase deficiency

An inborn error in neurotransmitter metabolism that leads to combined serotonin and catecholamine deficiency. It causes developmental and psychomotor delay, poor feeding, lethargy, ptosis, intermittent hypothermia, gastrointestinal disturbances. The onset is early in infancy and inheritance is autosomal recessive.