Acute asthma, prognosis, and treatment.

Asthma affects about 300 million people globally and accounts for 1 in every 250 deaths in the world. Approximately 12 million people in the United States each year experience an acute exacerbation of their asthma, a quarter of which require hospitalization. Acute asthma should be differentiated from poor asthma control.

Symptomatic Primary Selective Immunoglobulin M Deficiency with Nonprotective Pneumococcal Titers Responsive to Subcutaneous Immunoglobulin Treatment.

Selective immunoglobulin M deficiency (SIgMD) is a rare disorder with varying clinical features. The prevalence of SIgMD is 0.03-3%.