Harlequin ichthyosis is a severe genetic skin disorder that affects newborn infants. The spelling of "Harlequin Ichthyosis" is based on the International Phonetic Alphabet (IPA) which uses a combination of symbols to represent sounds. The pronunciation of this term is "hɑrklin ˌɪkθiˈoʊsɪs". The "h" is silent and "c" is replaced with "k" to represent the "k" sound. The "th" is spelled with "θ" and "ch" is spelled with "k" and "h". Understanding the phonetic alphabet helps in better pronunciation of difficult words.
Harlequin Ichthyosis is a rare, severe, and incurable genetic skin disorder characterized by a thick and rigid armor-like appearance of the skin. It is one of the most severe forms of congenital ichthyosis, a group of inherited skin conditions that cause the skin to become thick, scaly, and dry.
Individuals affected by Harlequin Ichthyosis display excessive growth of keratin, the protein that forms the outer layer of the skin. As a result, the skin becomes hard, cracked, and intensely dry, resembling polygonal-like diamond-shaped scales covering the entire body. Additionally, the abnormally tight and thickened skin excessively restricts movement, causing various physical deformities such as contracted joints and distorted facial features.
The condition is caused by mutations in the ABCA12 gene, which plays a crucial role in the proper development of the skin's outermost layer. These gene mutations impair the production of lipids required for maintaining the skin's natural moisture barrier, leading to the abnormal thickening and scaling.
Individuals with Harlequin Ichthyosis face numerous challenges related to their skin's vulnerability, including increased susceptibility to infections, difficulty regulating body temperature, and respiratory and nutritional difficulties during the early stage of life. Treatment primarily focuses on managing the symptoms and providing intense hydration to prevent dehydration and skin cracking.
Although Harlequin Ichthyosis is a lifelong condition with a severe impact on the quality of life, advancements in medical care, wound care techniques, and supportive therapy have contributed to increased survival rates, allowing affected individuals to live longer and more comfortable lives.
The word "Harlequin Ichthyosis" is formed by combining two terms: "Harlequin" and "Ichthyosis".
1. Harlequin: It is derived from the Italian word "Arlecchino" or "Harlequin", which refers to a stock character in traditional commedia dell'arte, a form of improvisational theater that originated in Italy. Harlequin is known for his distinctive multicolored diamond-patterned costume. The name "harlequin" was later used in English to describe a clown or buffoon.
2. Ichthyosis: It comes from the Greek word "ichthys", meaning fish. Ichthyosis refers to a group of genetic skin disorders characterized by dry, scaly, and thickened skin, resembling fish scales. The term "ichthyosis" relates to the appearance of the affected individuals' skin, which resembles the scales of a fish.