Synonym(s)
HistoryThis section has been translated automatically.
DefinitionThis section has been translated automatically.
Exogenously triggered, chronic phototoxic, partly also photoallergic reaction with post-inflammatory pigment incontinence.
Probably identical with the clinical picture described by Riehl(Riehl melanosis). S.a.u. Melanosis perioralis et peribuccalis.
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EtiopathogenesisThis section has been translated automatically.
- Caused by contact with lubricating oil and its derivatives, tar fumes, uncleaned petroleum jelly, phototoxic and sensitizing substances.
- Melanodermatitis toxica as well as melanosis and Riehl's melanosis are the expression of a mostly subclinical chronic persistent photosensitive reaction. Discrete superficial dermatitis leads to melanocytic hypertrophy and hyperplasia. As a consequence of these processes, increased epidermal pigmentation and vivid pigment incontinence occur. The dermal pigmentation essentially determines the dark colour (brown to slate grey) of the lesion.
LocalizationThis section has been translated automatically.
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HistologyThis section has been translated automatically.
General therapyThis section has been translated automatically.
Strict avoidance of the causative substances (mostly fragrances, perfumes, cosmetics, medicines). Slow regression is possible if the cause is avoided.
External therapyThis section has been translated automatically.
As a rule, over-painting of disturbing hyper pigmentations (e.g. Dermacolor) and light protection agents (e.g. Contralum ultra, Anthelios) are the most sensible solutions. Depigmenting external agents like hydroquinone cream(e.g. Pigmanorm) and the more effective combination of hydroquinone-hydrocortisone-Vit. A-acid (e.g. Pigmanorm) are not very useful as it is not only an epidermal pigment but also a dermal pigment which has "dripped off" there in the course of the chronic inflammatory reaction.
Progression/forecastThis section has been translated automatically.
LiteratureThis section has been translated automatically.
- Hoffmann E, Habermann R (1918) Medicinal and industrial dermatoses caused by war substitutes (Vaseline lubricating oil) and peculiar melanodermatitis. Dtsch Med Wochenschr 4: 261-264
- Kang HY (2012) Melasma and aspects of pigmentary disorders in Asia. Ann Dermatol Venereol 139 Suppl 3: 92-55
- Khanna N et al (2011) Facial melanoses: Indian perspective. Indian J Dermatol Venereol Leprol 77:552-563
Incoming links (15)
Berloque dermatitis; Hoffmann-habermann's pigment abnormality; Hyperpigmentation, circumscribed; Incontinentia pigmenti (Bloch-Sulzberger); Melanodermitis; Melanodermitis toxica; Melanosis blotches of the face; Perioral and peribuccal melanosis; Photomelanoses; Postinflammatory hyperpigmentation; ... Show allOutgoing links (16)
Atrophy of the skin (overview); Camouflage; Dermatitis; Hydrocortisone; Hydroquinone; Hyperpigmentation; Hyperplasia; Hypertrophy; Keratosis, follicular; Light stabilizers; ... Show allDisclaimer
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