Hemophilia Disease – Symptoms and Treatment

Definition of Hemophilia A group of inherited genetic disorders in which certain clotting factors are deficient or absent, resulting in clotting dysfunction. People who have hemophilia tend to bleed easily and longer than normal. Some forms of hemophilia carry substantial risk for life-threatening hemorrhage (bleeding). Types of Hemophilia Doctors classify hemophilia according to the deficient clotting factor, which may […]

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Edwards syndrome – diagnosis, deformities and anomalies

Edwards Syndrome Definition Edwards syndrome – an AUTOSOMAL TRISOMY disorder that results from a REPLICATION ERROR during cell division in which a GAMETE(sex cell) ends up with two copies of CHROMOSOME 18 instead of the normal single copy (as haploid cells, gametes contain one half the complement of chromosomes). At fertilization the ZYGOTE thus ends up with three instead of the normal two […]

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Thalassemia (alpha/beta) Disease – Symptoms and Treatment

Definition of Thalassemia alpha/beta Disease A genetic disorder of the blood in which the body fails to produce one or more of the proteins necessary for the synthesis of hemoglobin, the protein that enables erythrocytes (red blood cells) to carry oxygen. The consequence is anemia (inadequate oxygen to the cells throughout the body). There are two basic […]

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Familial Mediterranean Fever syndrome – diagnosis

Familial Mediterranean Fever Definition Familial Mediterranean Fever – an inherited genetic disorder that results in repeated episodes of arthritis (INFLAMMATION of the joints), PERITONITIS (inflammation of the membrane that lines the abdominal cavity), pleuritis (inflammation of the membrane that surrounds the LUNGS), and PERICARDITIS (inflammation of the membrane that contains the HEART). FEVER accompanies the outbreaks of inflammation, which […]

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Von Willebrand’s Disease – Symptoms and Treatment

Definition of Von Willebrand’s Disease A hereditary, genetic bleeding disorder resulting from a deficiency or molecular abnormality of clotting factor VIII. Unlike hemophilia A, which also results from clotting factor VIII deficiency, von Willebrand’s disease affects both men and women equally. Its inheritance pattern is autosomal dominant, meaning a child can acquire the condition when […]

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Fragile X Syndrome – symptoms, diagnosis and treatment

Fragile X Syndrome Definition An inherited genetic disorder that results in significant intellectual impairment. Fragile X syndrome arises from a monogenic (single-GENE), increased repeat MUTATION affecting the FMR1 gene on the X CHROMOSOME and is the leading cause of inherited intellectual impairment in males. Fragile X syndrome more severely affects males because females have a second X chromosome that can […]

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Alport’s Syndrome – Definition, Symptoms and Treatment

Definition of Alport’s Syndrome Alport’s Syndrome – An inherited genetic disorder in which one, two, or three mutations occur in the GENE that encodes type IV collagen formations, also called basement membranes. The mutations affect up to three of the six protein chains (alpha-3, alpha-4, and alpha-5) that make up type IV collagen, which is […]

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G6PD Deficiency – symptoms

G6PD Deficiency Definition G6PD Deficiency – an inherited genetic disorder in which the body lacks the enzyme glucose-6-phosphate dehydrogenase (G6PD). Erythrocytes (red BLOOD cells) normally produce G6PD, which aids in metabolizing carbohydrates and also helps to protect erythrocytes from oxidation (damage resulting from metabolic waste). The absence of G6PD causes health problems when the body experiences unusual stress, […]

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Cystinuria – definition, diagnosis, symptoms and treatment

Definition of Cystinuria Cystinuria is an inherited genetic disorder in which the KIDNEYS do not properly reabsorb amino acids collectively called cystine. The excessive excretion of cystine to the URINE causes crystalline calcifications, commonly called stones, to form in the kidneys, ureters, and BLADDER. Most people learn they have the GENE MUTATION, which is autosomal recessive, during analysis of the calcifications. […]

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Genetic Disorders in humans – list and definition

Genetic Disorders Definition Genetic Disorders is a collective classification for syndromes, diseases, and congenital anomalies that result from alterations of the genes and chromosomes.There are four general categories of genetic disorders, each relating to the way in which the alterations manifest. Chromosomal Disorders The normal human GENOME contains 23 paired chromosomes. CHROMOSOMAL DISORDERS occur when there are disruptions in […]

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