Hypsicephaly (Oxycephaly / Turricephaly) – A Detailed Overview 1. Terminology and definition Hypsicephaly is a descriptive term for a severe form of craniosynostosis in which the skull is abnormally high, peaked, or tower‑shaped due to premature fusion of multiple cranial sutures. It is essentially synonymous with: Standard medical dictionaries define oxycephaly as a type of …
Hypertrichosis coarse face syndrome(“Congenital hypertrichosis–coarse facial features spectrum / Cantú syndrome”) 1. Nomenclature and definition “Hypertrichosis–coarse face syndrome” is best understood today as part of the Cantú syndrome spectrum, officially termed: Cantú syndrome is a rare, autosomal dominant genetic disorder characterized classically by: There is increasing recognition of milder or atypical phenotypes with congenital hypertrichosis …
Hypertrichosis Universalis: A Comprehensive Clinical Review Executive Summary Hypertrichosis universalis congenita, commonly known as Ambras syndrome or werewolf syndrome, is an extremely rare genetic disorder characterized by excessive hair growth covering nearly the entire body from birth. This condition differs fundamentally from acquired hypertrichosis and other congenital forms by its universal distribution of fine, vellus-type …
Hypertrichosis Lanuginosa Congenita: A Comprehensive Clinical Review Introduction Hypertrichosis lanuginosa congenita (HLC), also known as congenital hypertrichosis universalis, hypertrichosis universalis, or hypertrichosis lanuginosa universalis, is an extremely rare genetic cutaneous disorder characterized by the presence of excessive fine, lanugo-type hair covering nearly the entire body surface at birth, with sparing of the palms, soles, and …
Hypertrichosis Cubiti: A Comprehensive Clinical Review Introduction Hypertrichosis cubiti, also known as “hairy elbow syndrome” (HES), is a rare congenital or early-onset localized form of hypertrichosis characterized by excessive hair growth (typically terminal hairs) concentrated bilaterally on the extensor surfaces of the elbows and extending from the midhumerus to the midforearm. First described by Beighton …
Humerus Trochlea Aplasia: A Comprehensive Clinical Review Introduction Humerus trochlea aplasia, also known as congenital aplasia or agenesis of the humeral trochlea, is an extremely rare familial bone deformity characterized by complete or near-complete absence of the trochlea of the humerus—the crucial articulating surface normally responsible for forming the ulnohumeral joint. This rare congenital malformation …
Hirayama Disease: A Comprehensive Clinical Review Introduction Hirayama disease (HD), also known as monomelic amyotrophy (MMA), juvenile non-progressive amyotrophy, Sobue disease, or benign monomelic amyotrophy, is a rare benign motor neuron disorder characterized by insidious onset of progressive weakness and atrophy of the distal upper limb musculature in young males, followed by spontaneous cessation of …