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).
Studies have linked many Rett syndrome cases to a defect in a gene called methl-CpG-binding protein 2 (MeCP2). This gene is on the X chromosome. Females have two X chromosomes. Even when one chromosome has this defect, the other X chromosome is normal enough for the child to survive.