Disorders of histidine metabolism digital illustration

Disorders of histidine metabolism Save

ICD-10 code: E70.4

Chapter: Endocrine, nutritional and metabolic diseases

Disorders of Histidine Metabolism

Histidine is an essential amino acid that plays a crucial role in the biosynthesis of proteins and the regulation of physiological functions. However, abnormalities in the metabolism of histidine can lead to various disorders that affect the body's overall health and function. Here are some of the common disorders of histidine metabolism:

  1. Histidinemia: This is a rare genetic disorder that occurs when the body cannot break down histidine properly. As a result, histidine and its byproducts accumulate in the blood, causing various symptoms such as developmental delays, intellectual disability, and behavioral problems. Treatment involves restricting histidine intake and providing a low-protein diet.
  2. Urocanic aciduria: This disorder occurs when the body cannot convert urocanic acid, a byproduct of histidine metabolism, into other compounds. This can lead to skin problems such as dryness, scaling, and sensitivity to light. Treatment involves avoiding exposure to UV radiation and providing a low-histidine diet.
  3. Hyperhistidinemia: This condition occurs when there is an excess of histidine in the blood. Although it is generally considered harmless, it can lead to symptoms such as headaches, dizziness, and fatigue. Treatment involves avoiding histidine-rich foods and supplements.

Diagnosis of disorders of histidine metabolism involves a combination of clinical symptoms, biochemical tests, and genetic analysis. Treatment usually involves a combination of dietary restrictions and supplementation with vitamins and minerals. It is essential to work closely with a healthcare professional to manage these disorders effectively.

In conclusion, disorders of histidine metabolism can have a significant impact on an individual's overall health and well-being. Early diagnosis and treatment are crucial to managing these conditions effectively.