Sunday, 3 May 2026

πŸ“˜ Chapter A — Module (Genetic, Chromosomal & Medical Conditions A–Z)

 


This module provides an alphabetical overview of genetic, chromosomal, neurological, and medical conditions, many of which are rare and may require specialist diagnosis and lifelong support.


A — Aicardi Syndrome

A rare genetic condition involving absence of the corpus callosum, infantile seizures, and eye abnormalities. Mainly affects girls.


B — Brugada Syndrome

A genetic heart condition causing dangerous irregular heart rhythms, increasing risk of sudden cardiac arrest.


C — Cri-du-chat Syndrome

A chromosomal disorder causing a high-pitched cry in infancy, intellectual disability, and delayed development.


D — Down Syndrome

A common chromosomal condition causing intellectual disability, developmental delays, and distinct physical features.


E — Edwards Syndrome

A severe genetic disorder with multiple organ abnormalities and low life expectancy.


F — Fragile X Syndrome

The most common inherited cause of intellectual disability, linked to a mutation in the FMR1 gene.


G — Gitelman Syndrome

A kidney disorder causing electrolyte imbalance (low potassium and magnesium), leading to fatigue and muscle weakness.


H — Hutchinson-Gilford Progeria Syndrome

A rare condition causing rapid aging in children, leading to early cardiovascular complications.


I — Irritable Bowel Syndrome

A common digestive condition causing abdominal pain, bloating, and altered bowel habits.


J — Joubert Syndrome

A rare genetic disorder affecting brain development, leading to coordination, breathing, and eye movement difficulties.


K — Klinefelter Syndrome

A genetic condition in males caused by an extra X chromosome, affecting physical development and fertility.


L — Leigh Syndrome

A severe neurological condition in infancy causing progressive loss of movement and mental abilities.


M — Marfan Syndrome

A genetic condition affecting connective tissue, often impacting the heart, eyes, and skeleton.


N — Noonan Syndrome

A condition causing distinctive facial features, heart defects, and short stature.


O — Osteogenesis Imperfecta

A group of genetic disorders causing fragile bones that break easily.


P — Patau Syndrome

A severe chromosomal disorder causing major physical and intellectual disabilities.


Q — Long QT Syndrome

A heart rhythm disorder that can cause sudden, life-threatening arrhythmias.


R — Rett Syndrome

A genetic brain disorder affecting mostly girls, causing loss of speech and motor skills after early development.


S — SjΓΆgren's Syndrome

An immune system condition causing dry eyes and mouth, often alongside other autoimmune diseases.


T — Turner Syndrome

A condition where one X chromosome is missing or incomplete, affecting growth and development.


U — Usher Syndrome

A genetic condition causing hearing loss and progressive vision loss (retinitis pigmentosa).


V — Van der Woude Syndrome

A genetic condition commonly causing cleft lip and/or palate.


W — Williams Syndrome

A condition affecting development, cardiovascular health, and social personality traits.


X — X-linked Ichthyosis

A skin condition causing dry, scaly skin due to a genetic mutation on the X chromosome.


Y — Yunis-VarΓ³n Syndrome

An extremely rare condition involving severe skeletal abnormalities and developmental issues.


Z — Zellweger Syndrome

A rare genetic disorder where cells cannot properly break down fatty acids, affecting brain and organ function.

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πŸ“š TABLE OF CONTENTS (CHAPTER STRUCTURE)

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