Skip to main content

Posts

Baraitser-Winter syndrome

Baraitser-Winter syndrome Overview Baraitser-Winter Cerebrofrontofacial (BWCFF) syndrome is a very rare genetic disorder (less than 100 reported cases) characterized by facial dysmorphism, brain malformations, and intellectual disability. Common symptoms include widely spaced eyes (hypertelorism), droopy eyelids (ptosis), high-arched eyebrows, and epilepsy. The condition is caused by heterozygous mutations in the ACTB or ACTG1 genes, which are essential for cellular structure and function. Symptoms Distinctive Craniofacial Features (100% frequency): Widely spaced eyes (hypertelorism). Droopy eyelids (bilateral ptosis). High-arched eyebrows. Broad nasal bridge and tip. Prominent metopic ridge (a ridge along the forehead). Pointed chin. Cleft lip/palate, although less common. Neurological and Developmental: Intellectual disability (mild to severe). Developmental delay. Brain malformations: Frontal pachygyria (thickened brain surface) or lissencephaly (smooth brain). Epilepsy/Seizures. Mu...
Post a Comment
Read more
Recent posts

Bare lymphocyte syndrome type I (BLS I)

Bare lymphocyte syndrome type I (BLS I)  Overview Bare lymphocyte syndrome type I (BLS I) is a rare, inherited primary immunodeficiency caused by a lack of Major Histocompatibility Complex (MHC) class I proteins on cell surfaces, leading to recurrent, severe bacterial infections, often in the lungs and airways. It is caused by genetic mutations, notably in  or genes, resulting in severe infections starting in childhood. According to the Immune Deficiency Foundation, management often requires diligent infection control and antibiotic treatment. Symptoms Recurrent Respiratory Infections: Frequent, severe bacterial infections in the lungs and airways (bronchitis, pneumonia, sinusitis) that often start in childhood. Bronchiectasis: Chronic lung damage, a common result of recurrent respiratory infections. Skin Lesions/Ulcers: Development of necrotic skin ulcers, often appearing in adolescence or young adulthood, typically on the face, arms, and legs. Chronic Infections: Increased ...
Post a Comment
Read more

X-linked hyper IgM syndrome

X-linked hyper IgM syndrome Overview X-linked hyper IgM syndrome (XHIGM, or HIGM1) is a rare primary immunodeficiency caused by mutations in the CD40LG gene on the X chromosome. Primarily affecting males, it causes low levels of IgG, IgA, and IgE, and normal/high IgM. This results in severe recurrent infections, often starting in infancy, with significant risk of opportunist infections, neutropenia, and liver disease, requiring lifelong treatment or  Symptoms Recurrent Infections: Infants often experience infections early in life, including pneumonia, sepsis, sinusitis, and otitis media. Opportunistic Infections: Susceptibility to unusual infections, particularly Pneumocystis jirovecii pneumonia (PCP) and Cryptosporidium diarrhea. Gastrointestinal Distress: Chronic diarrhea and liver disease, including sclerosing cholangitis, which may be caused by Cryptosporidium. Neutropenia: Intermittent or persistent low white blood cell count, often leading to mouth ulcers and skin infection...
Post a Comment
Read more

X-linked agammaglobulinemia (XLA)

X-linked agammaglobulinemia (XLA) Overview X-linked agammaglobulinemia (XLA), or Bruton's agammaglobulinemia, is a rare inherited immunodeficiency caused by mutations in the BTK gene, preventing B-cell maturation and resulting in very low antibody levels. Primarily affecting males, it leads to recurrent bacterial infections, commonly starting at 6-9 months old, requiring lifelong immunoglobulin replacement therapy. Symptoms Recurrent Infections: Frequent, persistent, or severe infections of the ears (otitis media), sinuses (sinusitis), nose (rhinitis), and lungs (pneumonia, bronchitis). Respiratory Infections: Bacterial pneumonia is common and, when it occurs in infants, is a strong indicator of XLA. Skin and Eye Infections: Abscesses, pyoderma, and conjunctivitis (pink eye). Gastrointestinal Issues: Chronic diarrhea, often due to a lack of IgA antibodies.  Serious Infections: Sepsis (blood poisoning), meningitis (spinal cord infection), and septic arthritis. Physical Findings :...
Post a Comment
Read more

X-Linked Adrenoleukodystrophy

X-Linked Adrenoleukodystrophy Overview X-linked adrenoleukodystrophy (ALD) is a rare genetic disorder that affects the white matter of the nervous system and the adrenal cortex. White matter is made up of nerve fibers called axons that relay nerve impulses from one cell to another. These nerve fibers are covered by myelin, an insulating layer or sheath that protects the nerve fibers. Myelin is made up of proteins and fats and gives white matter its white color. Without myelin, the signals between nerve cells cannot be transmitted properly, resulting in neurological symptoms. The adrenal cortex is the outer layer of cells of the adrenal glands. The adrenal glands sit atop the kidneys and produce hormones that are vital to proper health and development including cortisol and the sex hormones. Many of those affected experience serious neurological problems either during childhood or during adulthood with rather different types of disabilities. Some affected individuals also have adrenal i...
Post a Comment
Read more

Xanthinuria

  Xanthinuria Overview Xanthinuria is a rare genetic disorder characterized by a deficiency in the enzyme xanthine dehydrogenase/oxidase (XDH/XO), resulting in high xanthine levels and low uric acid in blood/urine. It often causes xanthine kidney stones, renal failure, and sometimes muscle pain, though many cases are asymptomatic Symptoms Kidney Stones (Xanthine Urolithiasis): The most common symptom, occurring in about 50% of patients. Hematuria: Blood in the urine. Urinary Tract Infections: Recurrent infections. Renal Issues: Acute renal failure, renal colic, and in rare cases, chronic kidney failure. Muscle Symptoms : Muscle pain and cramping (myalgia/arthropathy). Other Symptoms: Irritability, vomiting, and failure to thrive (particularly in children). Asymptoma tic: Some individuals, roughly 20%, may not experience any symptoms Causes Type I Xanthinuria: Caused by a mutation in the XDH gene alone, leading to deficiency of the xanthine dehydrogenase enzyme.  Type II Xa...
Post a Comment
Read more

Xanthelasma

Xanthelasma Overview Xanthelasma (cholesterol deposits) under the skin around the eyes. Xanthelasma, or cholesterol deposits, under the skin. What is xanthelasma? Xanthelasma, or xanthelasma palpebrarum (XP), is a harmless, yellow growth that appears on or by the corners of your eyelids next to your nose. Cholesterol deposits build up under your skin to form a xanthelasma. Having xanthelasmas could be a sign of another condition, such as: Diabetes. Hyperlipidemia (high cholesterol). Thyroid problems. Researchers have found that having xanthelasmas means it’s very likely that you’ll have these conditions in the future: Heart disease. Heart attack. Atherosclerosis (even if your cholesterol levels are normal). High cholesterol. Who does xanthelasma affect? Half of the people with xanthelasmas have high cholesterol levels. Healthcare providers usually see these levels in people with the kind of high cholesterol you get from your parents or some liver diseases. However, the other 50% of peo...
Post a Comment
Read more