
pmid: 15606646
We describe here a Parthenium hysterophorus patch‐test‐positive patient with widespread dermatitis of non‐airborne contact dermatitis pattern, improving while staying in Shimla (a parthenium‐free area) and rapidly worsening while visiting his native place, where there was exuberant parthenium growth. After recovery, inhalation of fresh plant material from a polythene bag resulted in exacerbation of dermatitis and pruritus within 8–10 hr, without any respiratory symptoms. The possible pathomechanism of such a phenomenon is discussed.
Adult, Male, Pruritus, Allergens, Asteraceae, Patch Tests, Bronchial Provocation Tests, Forced Expiratory Volume, Dermatitis, Allergic Contact, Respiratory Hypersensitivity, Humans, Vasculitis, Leukocytoclastic, Cutaneous
Adult, Male, Pruritus, Allergens, Asteraceae, Patch Tests, Bronchial Provocation Tests, Forced Expiratory Volume, Dermatitis, Allergic Contact, Respiratory Hypersensitivity, Humans, Vasculitis, Leukocytoclastic, Cutaneous
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