The term cellulitis is commonly used to indicate a nonnecrotizing inflammation of the skin and subcutaneous tissues, a process usually related to acute infection that does not involve the fascia or muscles. Cellulitis is characterized by localized pain, swelling, tenderness, erythema, and warmth.
The regions on chromosomes 7 and 12 may coincide with the asthma and atopy loci on the same chromosomes. Polymorphism in the IL1 cluster on chromosome 2 has also been shown to influence the severity of the disease (95, 96).
Asthma Triggers. Acute asthma exacerbation is often caused by a particular trigger. Common triggers include allergens, exercise and poor air quality. Respiratory viruses, especially rhinovirus, cause the majority of asthma exacerbations in both children and adults. Changes in weather such as extreme heat or cold may also cause spasm of the airways.