Hemophilus influenzae type B buccal cellulitis

Dermatologic Problems in the Intensive Care Unit: Part II

Skin disorders are present in many patients hospitalized in the intensive care unit. They range in severity from being the reason for admission to being a nuisance during care. These cutaneous problems have been categorized into four groups: (1) serious skin diseases that may incur life-threatening complications; (2) subtle skin problems associated with systemic disorders that may be characterized by critical events; (3) prominent cutaneous manifestations that accompany life-threatening systemic diseases; and (4) skin disorders that develop as complications during intensive care. Diseases in the first category were discussed in Part I of this article [1]. In Part II, we discuss diseases in the second category. The remaining disorders will be covered in Parts III and IV.

Bacterial infections of the skin

This article discusses common bacterial skin infections, including impetigo, cellulitis and erysipelas folliculitis, staphylococcal scalded skin syndrome, blistering distal dactylitis, furuncles and carbuncles, and pseudomonal infections such as external otitis and malignant external otitis, ecthyma gangrenosum, pseudomonal folliculitis, toe web infection, and erysipeloid.

Facial erysipelas: report of a case and review of the literature

The diagnosis of erysipelas is usually made clinically. Features that help distinguish erysipelas are acute onset, erythema, warmth, edema, pain, fever, and isolated regional involvement with clearly demarcated margins. High ASO titers and response to penicillin therapy are reassuring. Simple uncomplicated erysipelas or cellulitis in adults can usually be treated on an outpatient basis. Extensive facial involvement with fever and a toxic appearance warrants hospitalization. Facial cellulitis or erysipelas in children, unless quite limited, requires hospitalization because of the high risk of Hemophilus influenzae infection and sepsis. Hospitalized patients should show visible signs of resolution and be afebrile for at least 24 hours prior to discharge. They should be maintained on oral antibiotic therapy at home for an additional 7 to 10 days.

Buccal cellulitis

Buccal cellulitis (BC) is an innocuous appearing infection of the cheek that is found in children and has a high incidence of concomitant bacteremia. Typically, the child is younger than 12 months and has a 2 to 8 hour prodrome of coryza and fever before developing the cellulitis on the cheek. A purplish hue on the cellulitic region is highly suggestive of Hemophilus influenzae bacteremia. The differential diagnosis is reviewed. A complete blood count, blood culture, and cellulitis aspirate culture, should be obtained on all patients with BC. Meningitis may be present despite the lack of meningeal signs. A lumbar puncture should be performed on all children at risk for bacteremic BC. The vast majority of these children are bacteremic and require parenteral antibiotics. A typical case of BC is presented and its management is reviewed.

Practical aspects of bacterial skin infections in children

Bacterial skin infections are a common reason for children to be examined by a pediatrician. Streptococci and staphylococci are responsible for the great majority of the infections. Because of the variety of lesions produced by these bacteria, there is support for dividing impetigo into "traditional" crusted and bullous forms. Two important forms of cellulitis--facial and periorbital--have potential for serious systemic consequences. The bacterial etiology and treatment of cellulitis, animal bites, and puncture wounds of the foot require special attention for successful outcome.

Facial and periorbital cellulitis in children

Facial and periorbital cellulitis require emergent recognition and treatment. Hemophilus influenzae type B is the most common pathogen, with Streptococcus pneumoniae being cultured less frequently. Infections following injury are usually caused by Staphylococcus aureus and group A streptococci. Initial evaluation must exclude more severe orbital involvement. Appropriate bacteriological specimens should be obtained. Management requires parenteral antibiotics and careful monitoring for a clinical response or dissemination to other sites of infection.