idiopathic hypogonadotropic hypogonadism (ihh) is a condition caused by low doses of hypothalamic gonadotropin-releasing hormone (gnrh) leading to absence or incomplete sexual maturation. one of the disorders leading to ihh is kallmann syndrome which is characterized by gnrh deficiency with anosmia or hyposmia. this disorder generally occurs as a hereditary syndrome with x-linked recessive inhe...

Environmental factors can induce epigenetic alterations in the germ cells that can potentially be transmitted transgenerationally. This non-genetic form of inheritance is termed epigenetic transgenerational inheritance and has been shown in a variety of species including plants, flies, worms, fish, rodents, pigs, and humans. This phenomenon operates during specific critical windows of exposure,...

Familial bilateral abductor vocal cord paralysis is a rare entity with few prior descriptions in the literature. Modes of inheritance include X-linked, autosomal recessive, and autosomal dominant. A case of this condition in a father and son is presented. Signs and symptoms at presentation, diagnosis, therapeutic considerations, and modes of inheritance are discussed.