Question: What is (are) Platelet storage pool deficiency ?
Answer: Platelet storage pool deficiency refers to a group of conditions that are caused by problems with the platelet granules. Platelet granules are tiny storage sacs found within the platelets which release various substances to help stop bleeding. Platelet storage pool deficiencies occur when platelet granules are absent, reduced in number, or unable to empty their contents into the bloodstream. The signs and symptoms include frequent nosebleeds; abnormally heavy or prolonged menstruation; easy bruising; recurrent anemia; and abnormal bleeding after surgery, dental work or childbirth. Platelet storage pool deficiencies may be genetic or acquired (non-genetic). They can also be part of an inherited genetic syndrome such as Hermansky-Pudlak syndrome, Chediak-Higashi syndrome, thrombocytopenia-absent radius (TAR) syndrome, and Wiskott-Aldrich syndrome. Treatment is symptomatic.
Source: GARD

Question: What are the symptoms of Platelet storage pool deficiency ?
Answer: What are the signs and symptoms of Platelet storage pool deficiency? The signs and symptoms of platelet storage pool deficiency vary but may include: Frequent nosebleeds Abnormally heavy or prolonged menstruation Easy bruising Recurrent anemia Abnormal bleeding after surgery, dental work or childbirth The Human Phenotype Ontology provides the following list of signs and symptoms for Platelet storage pool deficiency. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormal bleeding - Acute leukemia - Autosomal dominant inheritance - Decreased mean platelet volume - Myelodysplasia - Prolonged bleeding time - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common.
Source: GARD

Question: What causes Platelet storage pool deficiency ?
Answer: What causes platelet storage pool deficiency? Platelet storage pool deficiency refers to a group of conditions that are caused by problems with the platelet granules. Platelet granules are tiny storage sacs found within the platelets which release various substances to help stop bleeding. Some platelet storage pool deficiencies are due to reduced or absent granules or granule contents. Others occur if the platelets are unable to empty the contents of the platelet granules into the bloodstream. Platelet storage pool deficiencies can be genetic or acquired (non-genetic). The four major genetic forms include dense body deficiency, gray platelet syndrome, Factor V Quebec, and mixed alpha-granule/dense body deficiency. Platelet storage pool deficiency is also a feature of several inherited conditions such as Hermansky-Pudlak syndrome, Chediak-Higashi syndrome, thrombocytopenia-absent radius (TAR) syndrome, and Wiskott-Aldrich syndrome. Causes of acquired platelet storage pool deficiencies include: Systemic lupus erythematosus Cardiovascular bypass Hairy-cell leukemia
Source: GARD

Question: Is Platelet storage pool deficiency inherited ?
Answer: Is platelet storage pool deficiency inherited? Platelet storage pool deficiency refers to a group of conditions that can be acquired (non-inherited) or inherited. Hereditary forms of the condition may be inherited in an autosomal dominant, autosomal recessive, or X-linked manner. In autosomal dominant conditions, one changed (mutated) copy of the responsible gene in each cell is enough to cause signs or symptoms of the condition. When a person with an autosomal dominant condition has children, each child has a 50% (1 in 2) risk to inherit the mutated copy of the gene from the affected parent. When a condition is inherited in an autosomal recessive manner, a person must have a change in both copies of the responsible gene in each cell. The parents of an affected person usually each carry one mutated copy of the gene and are referred to as carriers. Carriers typically do not show signs or symptoms of the condition. When two carriers of an autosomal recessive condition have children, each child has a 25% (1 in 4) risk to have the condition, a 50% (1 in 2) risk to be a carrier like each of the parents, and a 25% chance to not have the condition and not be a carrier. A condition is considered X-linked if the mutated gene that causes the condition is located on the X chromosome, one of the two sex chromosomes (the Y chromosome is the other sex chromosome). Women have two X chromosomes and men have an X and a Y chromosome. X-linked conditions can be X-linked dominant or X-linked recessive. The inheritance is X-linked dominant if one copy of the altered gene in each cell is sufficient to cause the condition. Women with an X-linked dominant condition have a 50% chance of passing the condition on to a son or a daughter with each pregnancy. Men with an X-linked dominant condition will pass the condition on to all of their daughters and none of their sons. The inheritance is X-linked recessive if a gene on the X chromosome causes the condition in men with one gene mutation (they have only one X chromosome) and in females with two gene mutations (they have two X chromosomes). A woman with an X-linked condition will pass the mutation on to all of her sons and daughters. This means that all of her sons will have the condition and all of her daughters will be carriers. A man with an X-linked recessive condition will pass the mutation to all of his daughters (carriers) and none of his sons.
Source: GARD

Question: How to diagnose Platelet storage pool deficiency ?
Answer: How is platelet storage pool deficiency diagnosed? A diagnosis of platelet storage pool deficiency is often suspected based on the presence of characteristic signs and symptoms. Specialized laboratory tests can then be ordered to confirm the diagnosis. This testing may include: Bleeding time studies Platelet aggregation studies Peripheral blood smear Flow cytometry (detects a reduction in certain types of granules in affected platelets)
Source: GARD