Erythema Nodosum
Erythema Nodosum Susan Haller Psaila, MD Basic Information Definition Erythema nodosum is an inflammatory reaction pattern in the skin to several inciting factors; it is the most common type of…
Adjustment Disorder
Adjustment Disorder Christopher H. Hodgman, MD Basic Information Definition Adjustment disorder comprises emotional or behavioral symptoms occurring within 3 months of a stressor and lasting no more than 6 months…
Anemia, Aplastic Crisis
Anemia, Aplastic Crisis Jill S. Halterman, MD, MPH , George B. Segel, MD Basic Information Definition Erythroid aplastic crisis is characterized by a relative failure of red blood cell production,…
Congenital Diaphragmatic Hernia
Congenital Diaphragmatic Hernia Patricia R. Chess, MD Basic Information Definition Congenital diaphragmatic hernia (CDH) is a diaphragmatic defect resulting from failure of the posterolateral portion of the diaphragm to develop,…
Cat‐Scratch Disease
Cat-Scratch Disease Mary T. Caserta, MD Basic Information Definition Cat-scratch disease (CSD) is a subacute to chronic regional lymphadenitis syndrome that occurs after cutaneous, ocular, or mucous membrane inoculation in…
Blepharitis
Blepharitis Anna F. Fakadej, MD, FAAO, FACS Basic Information Definition Blepharitis is a spectrum of acute and chronic inflammation of the eyelids. Synonyms Chalazia Meibomitis Seborrheic blepharitis Staphylococcus blepharitis ICD-9-CM…
Animal Bites
Animal Bites Leticia Manning Ryan, MD , Robert J. Freishtat, MD, MPH Basic Information Definition Bites may occur from a variety of animals including dogs, cats, and rodents; most are…
