Abstract
In oder to discuss the classification of drug eruptions, the definition of those must be clarified. Many authors had described various concepts about drug eruptions, but following definition considered to be more appropriate, i. e., drug eruptions are the all dermatologic disturbances which may be caused by internally absorbed and circulating drugs or those metabolites. According to the definition, the clinical types of those would be classified into three categolies as follows.
1. Original types: Urticaria, eczematous type, non-specific erythemas, erythema multiforme-like eruption, bullous type, fixed eruption, purpuras, pigment anomalies, enanthemas, acneiform eruptions, erythema nodosum-like, erythematodes-like, vasculitis-like, lichen planus-like, psoriasis vulgarislike parapsoriasis-like, pustular psoriasis-like eruptions and others.
2. Severe forms: Erythrodermia (exfoliative dermatitis), muco-cutaneous ocular syndrome and toxic epidermal necrolysis.
3. Iatrogenic skin disorders: Herpes zoster, warts, keratoma, cancer, furunculosis, candidiasis, candidiasis black hairy tongue, pellagra, porphyrinuria, alopecia, hypertrichosis, poliosis, hyperidrosis, chromoidrosis, atrophy and ulcer.
If the term of drug eruption would be used in a narrow sense, the last must be excluded.
