Protein involved in Iron<unk> m<unk>  (HFE) Inherited<unk> s are one cause of<unk> s, and occur when a defective gene causes an enzyme deficiency. These diseases, of which there are many subtypes, are known as inborn errors of<unk> m.<unk>  diseases can also occur when the liver or pancreas do not function properly. Types The principal classes of<unk> s are:
Metabolic disorder
Febrile seizure
Psychogenic disease
Vitamin deficiency
Lipid storage disorder
Neurodegenerative disease
Mineral deficiency
Genetic disorder