Ronald M. Ferdman

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The inclusion of a query concerning the presence of snoring in a questionnaires used by the Allergy Service of Childrens Hospital Los Angeles (CHLA) uncovered a significant number of patients who were experiencing prolonged and discomforting symptoms owing to previously undiagnosed obstructive sleep apnea (OSA) caused by adenotonsillar hypertrophy. Of 352(More)
STUDY OBJECTIVE Determining the incidence of latex allergy in children receiving home mechanical ventilation. BACKGROUND The prevalence of latex allergy in the general population ranges from 0.1 to 1.0%. However, in patients with spina bifida and other chronic medical conditions associated with repeated exposure to latex, the prevalence may be as high as(More)
The United States Immunodeficiency Network (USIDNET) patient registry was used to characterize the presentation, genetics, phenotypes, and treatment of patients with Hyper IgM Syndrome (HIGM). The USIDNET Registry was queried for HIGM patient data collected from October 1992 to July 2015. Data fields included demographics, criteria for diagnosis, pedigree(More)
Background A significant proportion of young children with atopic dermatitis (AD) is sensitized to microbial allergens, which play a potential role in the pathogenesis of AD inflammation. Objective To study the timing of IgE sensitization to microbial allergens including staphylococcal superantigens, Malassezia species and Candida albicans in young children(More)
OBJECTIVE To examine the frequency of allergic sensitization to staphylococcal superantigens in young children with mild to moderate atopic dermatitis (AD). STUDY DESIGN AD severity was assessed with objective Scoring AD. Serum IgE to staphylococcal enterotoxin (SE) A, SEB, SEC, SED, and toxic shock syndrome toxin-1 were measured with ImmunoCAP.(More)
Recent studies have examined the presence of mouse allergen in inner city children with asthma. Researchers have found high levels of rodent allergen in homes sampled in the northeast and midwest United States, but there has been considerable variation between cities, and there have been few studies conducted in western states. We evaluated the frequency of(More)
BACKGROUND Inhalation of pectin has been identified as a cause of occupational asthma. However, allergic reactions to orally ingested pectin have not been reported. OBJECTIVES To describe a child with pectin-induced food anaphylaxis and to discuss its possible relationship to cashew allergy. METHODS A 3 1/2-year-old boy developed anaphylaxis once after(More)