Hypervitaminosis a, also known as hyperalimentation of vitamin a, is related to intracranial hypertension, idiopathic and papilloma, and has symptoms including hepatomegaly An important gene associated with Hypervitaminosis a is RBP4 (Retinol Binding Protein 4), and among its related pathways/superpathways are Metabolism and Signal Transduction. The drugs Vitamin A and Vitamins have been mentioned in the context of this disorder. Affiliated tissues include liver and bone, and related phenotypes are nervous system and endocrine/exocrine gland