Henrik Thormann

Contact urticaria to common ivy (Hedera helix cv. ‘Hester’) with concomitant immediate sensitivity to the labiate family (Lamiaceae) in a Danish gardener

Common ivy (Hedera helix) is a very common evergreen plant. Both irritant and allergic contact dermatitis have been reported (1), whereas immediate reactions have not been thoroughly investigated (2). Skin and immediate mucosal symptoms to a number of plants have been observed among gardeners, especially in atopics (3). We report a case of contact urticaria to common ivy and rosemary with cross-reactivity to the labiate family in a gardener handling these plants on a daily basis.

Occupational periorbital allergic contact dermatitis caused by antioxidants in black rubber in an otorhinolaryngologist using an otomicroscope

Keywords: allergic contact dermatitis; antioxidants; black rubber; occupational; case report

Contact sensitization to Geranium robertianum L. in an amateur gardener

A 68-year-old male retired non-atopic school librarian was referred for suspected plant contact dermatitis. The patient had taken up gardening as a hobby when he retired from work: mowing the lawn, cutting hedges and weeding in his garden. For 6–10 years, he had suffered from transient dermatitis on his eyelids, which he attributed to a habit of wiping his eyelids with his hands during gardening. The patient suspected weeds, and especially Herb Robert, which had spread in his garden, to be the main culprits. He tried to avoid contact with this plant by using safety glasses and gloves while gardening. Prior to referral, patch testing was performed with the baseline series and Herb Robert leaf, flower, and stem (tested ‘as is’), and the only reaction was slight erythema at D3 caused by the plant leaf. Prick tests elicited positive reactions to dog, cat, and house dust mite. Patch testing was repeated with the baseline series (TRUE Test® Panel 1–3 supplemented with pet.-based allergens) and eye drops, various Compositae (Asteraceae) plant extracts and allergens, primin and lichen acid mix, falcarinol, and the patient’s own plant Herb Robert. The plant was chopped and tested ‘as is’ with

Contact sensitization to Geranium robertianum L. in a hobby gardener

A 68-year-old male retired non-atopic school librarian was referred for suspected plant contact dermatitis. The patient had taken up gardening as a hobby when he retired from work: mowing the lawn, cutting hedges and weeding in his garden. For 6–10 years, he had suffered from transient dermatitis on his eyelids, which he attributed to a habit of wiping his eyelids with his hands during gardening. The patient suspected weeds, and especially Herb Robert, which had spread in his garden, to be the main culprits. He tried to avoid contact with this plant by using safety glasses and gloves while gardening. Prior to referral, patch testing was performed with the baseline series and Herb Robert leaf, flower, and stem (tested ‘as is’), and the only reaction was slight erythema at D3 caused by the plant leaf. Prick tests elicited positive reactions to dog, cat, and house dust mite. Patch testing was repeated with the baseline series (TRUE Test® Panel 1–3 supplemented with pet.-based allergens) and eye drops, various Compositae (Asteraceae) plant extracts and allergens, primin and lichen acid mix, falcarinol, and the patient’s own plant Herb Robert. The plant was chopped and tested ‘as is’ with

Eucalyptus species as a cause of airborne allergic contact dermatitis: AIRBORNE CONTACT DERMATITIS CAUSED BY EUCALYPTUS

Floristry carries a risk of sensitization to plants. Although most plants have a low allergenic potential, popular cut flowers such as chrysanthemums (Chrysanthemum cultivars), tulips (Tulipa cultivars), and Peruvian lilies (Alstroemeria cultivars) are frequent and potent plant sensitizers (1). Although greenery used in bouquets is a rare cause of contact dermatitis, 2 cases of contact allergy to Eucalyptus twigs have been published. Here, we report another 2 cases to emphasize the clinical features and possible occupational consequences (2, 3).

Contact allergy in Danish children: Current trends

Contact allergy is common in children, but may be underdiagnosed. Importantly, the clinical relevance of specific allergies is subject to constant change, and it is therefore important to continuously monitor the trends and changes of contact allergies in the paediatric population.

Contact sensitization toGeranium robertianumL. in an amateur gardener: CONTACT ALLERGY TOGERANIUM ROBERTIANUM

A 68-year-old male retired non-atopic school librarian was referred for suspected plant contact dermatitis. The patient had taken up gardening as a hobby when he retired from work: mowing the lawn, cutting hedges and weeding in his garden. For 6–10 years, he had suffered from transient dermatitis on his eyelids, which he attributed to a habit of wiping his eyelids with his hands during gardening. The patient suspected weeds, and especially Herb Robert, which had spread in his garden, to be the main culprits. He tried to avoid contact with this plant by using safety glasses and gloves while gardening. Prior to referral, patch testing was performed with the baseline series and Herb Robert leaf, flower, and stem (tested ‘as is’), and the only reaction was slight erythema at D3 caused by the plant leaf. Prick tests elicited positive reactions to dog, cat, and house dust mite. Patch testing was repeated with the baseline series (TRUE Test® Panel 1–3 supplemented with pet.-based allergens) and eye drops, various Compositae (Asteraceae) plant extracts and allergens, primin and lichen acid mix, falcarinol, and the patient’s own plant Herb Robert. The plant was chopped and tested ‘as is’ with