Contact sensitization to Magnolia officinalis bark extract and other allergens in a patient with frontal fibrosing alopecia and lichen planus pigmentosus.

2 Bishnoi A, Vinay K, Parsad D, Handa S, Saikia UN, Sendhil Kumaran M. Contact sensitization to hair colours in acquired dermal macular hyperpigmentation: results from a patch and photo-patch test study of 108 patients. Allergic contact dermatitis, case report, frontal fibrosing alopecia, gallates, pigmented contact dermatitis, propolis, acquired dermal macular hyperpigmentation, ethylhexyl salicylate, lichen planus pigmentosus, Magnolia officinalis bark extract Keywords: acquired dermal macular hyperpigmentation; allergic contact dermatitis; case report; ethylhexyl salicylate; frontal fibrosing alopecia; gallates; lichen planus pigmentosus; Magnolia officinalis bark extract; pigmented contact dermatitis; propolis EN acquired dermal macular hyperpigmentation allergic contact dermatitis case report ethylhexyl salicylate frontal fibrosing alopecia gallates lichen planus pigmentosus Magnolia officinalis bark extract pigmented contact dermatitis propolis 434 436 3 04/14/22 20220501 NES 220501 Frontal fibrosing alopecia (FFA) and lichen planus pigmentosus (LPP) frequently coexist.1 The umbrella term "acquired dermal macular hyperpigmentation (ADMH)" encompasses disorders with clinicopathological overlap such as LPP and pigmented contact dermatitis.2 Contact sensitization has been described in the contexts of both FFA and ADMH.2-4 CASE REPORT A woman with Fitzpatrick skin phototype IV and hypothyroidism developed pruritic macular hyperpigmentation with punctate hypopigmentation symmetrically on her forehead (Figure 1A) at age 45 which she related to hair dyes. [Extracted from the article]