Authors

• Rahim Vakili ¹
• Mehran Beiraghi Toosi ²
• Asma Javid ³
• Nahid Donyadideh ⁴
• Farnoosh Ebrahimzadeh ⁴
• Narges Hashemi ²
• Somayeh Hashemian ¹

¹ Department of Pediatric Endocrinology, Emam Reza Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.

² Department of Pediatric Neurology, Ghaem Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.

³ Department of Pediatrics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.

⁴ Department of Internal Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.

Abstract

Succinic semialdehyde dehydrogenase (SSADH) deficiency or 4-Hydroxybutyric Aciduria is an autosomal recessive inherited disorder of amma-aminobutyric acid (GABA) degradation. It is characterized by developmental delay, infantile-onset hypotonia, cognitive impairment language deficit, and ataxia. Epilepsy, aggression, Hyperkinetic behavior, hallucinations, and sleep disturbances have been described in about half of the patients, more frequently in older individuals.
Its management is largely symptomatic, conducted at the treatment of seizures and neurobehavioral disorder. We present two girls with chief complaint of hypotonia and developmental delay how referred to department of Pediatrics (Ghaem hospital), Mashhad, Iran.

Keywords

• Child
• Developmental delay
• 4-Hydroxybutyric Aciduria
• Hypotonia