Id Reaction was found in 5-Minute Clinical Consult which helps you diagnose, treat, and follow up on over 900 medical conditions seen in everyday practice.
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Basics
Description
A generalized skin reaction associated with various infectious and inflammatory cutaneous conditions distant from the main rash of the disease:
- Id is a word termination often combined with a root reflecting the causative factor (i.e., bacterid, syphilid, and tuberculid). The dermatophytid is the most frequently referenced id reaction in dermatology. A dermatophytid is an autosensitization reaction in which a secondary cutaneous reaction occurs at a site distant to a primary fungal infection. The eruption begins typically within 1–2 weeks of the onset of the main lesion or following exacerbation of the main lesion (1).
- System(s) affected: Skin/Exocrine
- Synonym(s): Dermatophytid, Trichophytid, Autoeczematization
Epidemiology
- Predominant age: All ages
- Predominant sex: Male = Female
Incidence
Unknown; no good data source
Prevalence
Common
Risk Factors
- Fungal infection of the skin
- Stasis dermatitis
General Prevention
- Minimize factors for developing fungal infections.
- Promptly treat any developing fungal infection.
Etiology
Precise pathophysiology is uncertain. Circulating antigens may react with antibodies at sensitized areas of the skin, or abnormal immune recognition of autologous skin antigens may occur.
Commonly Associated Conditions
- Primary fungal infection
- Stasis dermatitis
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