Wiskott-Aldrich Syndrome Clinical Presentation
- Author: Donald A Dibbern Jr, MD; Chief Editor: Michael A Kaliner, MD more...
History
- Male infants with WAS usually present with bleeding, commonly bloody diarrhea, prolonged bleeding from circumcision, purpura, or unusual bruising.
- One series of 154 patients found petechiae or purpura in 78%, serious gastrointestinal bleeding (hematemesis or melena) in 28%, epistaxis in 16%, and intracranial bleeding in 2% of patients.[2]
- Serious infections also occur. Encapsulated organisms are frequent pathogens that may cause life-threatening complications, including pneumonia, meningitis, and sepsis. Pneumocystis carinii and viral infections also may become troublesome.
Physical
Watch for signs of bleeding, infection, malignancy, and atopy during the physical examination.
- Patients' general appearance and vital signs are important. Follow height and weight over time to monitor appropriate development.
- Examine the skin for any evidence of eczema, purpura (eg, thrombocytopenia), or superficial or deep infections (eg, impetigo, cellulitis, furuncles, abscesses).
- During head and neck examinations, note any abnormalities of the tympanic membranes (eg, otitis media) or sinuses and mucous membranes (eg, sinonasal infections, pharyngitis, thrush).
- Auscultate lungs carefully to check for wheezing (eg, asthma) and rales or rhonchi (eg, pulmonary infection such as bronchitis or pneumonia).
- Investigate for a possible malignancy if adenopathy or hepatosplenomegaly is present.
- Neurological examination is particularly relevant if meningitis, central nervous system lymphoma, or intracranial bleeding or infection is considered.
Causes
- The WASp gene is located on the Xp11.22-23 region of the X chromosome and is inherited in a sex-linked fashion. A male child of a female carrier has a 50% chance of being affected; a female child has a 50% chance of being a carrier.[35]
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