Hematology focuses on diseases of the blood, bone marrow, and lymphatic system. Learn about the diagnosis and treatment of anemia, leukemia, and lymphoma.
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Hemophilia is a rare, inherited genetic bleeding disorder in which the blood does not clot properly. This condition is caused by a deficiency or malfunction of specific proteins in the blood called clotting factors, which are essential for the coagulation cascade. When a blood vessel is injured, a functional hemostatic system works to seal the wound; however, in individuals with hemophilia, this process is impaired. This does not mean the patient bleeds faster than normal, but rather that they bleed for a longer duration. While often associated with external cuts, the primary danger in hemophilia lies in internal bleeding, particularly into joints and muscles, which can lead to severe pain, chronic joint damage, and life-threatening complications if vital organs are involved.
Hemostasis is the body’s physiological response to prevent blood loss. It involves a complex interaction between blood platelets and clotting factors. In a healthy system, when a vessel breaks, platelets form a plug, and clotting factors (numbered I through XIII) activate in a specific sequence to form a fibrin mesh that stabilizes the clot.
In hemophilia, a break in this chain occurs. The definition of the disease depends on which link is missing. Without the necessary factor, the fibrin mesh cannot form effectively, resulting in an unstable clot that is easily dislodged, leading to prolonged or re-occurring bleeding.
This is the most common form of the disorder, accounting for approximately 80 to 85 percent of all cases. It is defined by a deficiency or absence of Factor VIII (8).
It affects all races and ethnic groups globally. Because the gene is located on the X chromosome, it primarily affects males, though females can be carriers and occasionally experience symptoms.
This form is defined by a deficiency of Factor IX (9). It is clinically indistinguishable from Hemophilia A based on symptoms alone and requires specific blood tests to diagnose.
It is famously known as the “Royal Disease” because it was passed down through the lineage of Queen Victoria to various royal families in Europe. It is less common than Hemophilia A.
The definition of hemophilia severity is based on the percentage of clotting factor activity present in the blood compared to normal levels (which are 50 to 150 percent).
Factor Level: 6 to 40 percent.
Patients may only experience prolonged bleeding after a serious injury, trauma, or surgery. Spontaneous bleeding is rare.
Factor Level: 1 to 5 percent.
Bleeding episodes tend to occur after minor injuries. Occasional spontaneous bleeding may occur without obvious cause.
Factor Level: Less than 1 percent.
This is defined by frequent spontaneous bleeding episodes, often into the joints and muscles, occurring one to two times per week without prophylactic treatment.
While most cases are genetic, there is a rare form known as Acquired Hemophilia. This is not inherited but is an autoimmune disorder where the immune system develops antibodies that attack the body’s own clotting factors, usually Factor VIII.
Unlike the congenital form, acquired hemophilia affects men and women equally and typically occurs in older adults or women during the postpartum period.
The genes for Factor VIII and Factor IX are located on the X chromosome.
Men have one X and one Y chromosome (XY). If a male inherits an X chromosome with the mutated gene, he will have hemophilia. Women have two X chromosomes (XX). If a female inherits one mutated copy, the other healthy X chromosome usually produces enough factor to prevent severe symptoms, making her a carrier. However, she can pass the gene to her children.
Hemophilia is a rare condition. Hemophilia A occurs in approximately 1 in 5,000 male births, while Hemophilia B occurs in approximately 1 in 20,000 to 30,000 male births.
While developed nations have established registries and care networks, a significant portion of the global hemophilia population remains undiagnosed or receives inadequate care, highlighting the need for improved definition and awareness protocols worldwide.
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A urologist is a surgeon trained to treat conditions of the urinary tract in both men and women. A urogynecologist has specific training in female pelvic medicine and reconstructive surgery, focusing on conditions like bladder prolapse and female incontinence.
The bladder lining (urothelium) has a high regenerative capacity and heals quickly after minor trauma or infection. However, the muscle layer (detrusor) does not regenerate well. If the muscle is damaged by chronic overdistention or fibrosis, the loss of function is often permanent.
Yes, psychological stress can exacerbate bladder symptoms. The bladder has many nerve receptors sensitive to stress hormones. “Stress incontinence” refers to physical pressure (coughing/sneezing), but anxiety can trigger “urgency” and frequency, mimicking Overactive Bladder symptoms.
Yes, the bladder’s functional capacity tends to decrease with age. Furthermore, the elasticity of the bladder wall reduces, and the kidneys produce more urine at night (nocturnal polyuria), leading to increased nighttime urination in older adults.
Neurogenic bladder is a term used when the nerve control of the bladder is disrupted due to a brain, spinal cord, or nerve condition (like diabetes or MS). This can cause the bladder to either be unable to hold urine (incontinence) or unable to empty it (retention).
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