CAS: Chemical Abstract Service Registry Number
Background
Coal tar is the by-product in the distillation of coal. It is used as a
topical anti-eczematic and anti-psoriatic agent.
A study of 72 patients with psoriasis found that out of 13 patients
who reported intolerance to coal tar were actually allergic (Burden et al.). The authors suggest patch-testing patients who are unable to tolerate
coal tar preparations.
Synonyms
Coal tar
Uses
Topical medications
Cross-Reactions
Unusual Reactions
Photoallergy
Phototoxicity
Persitant light reaction
Postinflammatory hyperpigmentation
References
1.
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Sugai,
T., Y. Takahashi, and T. Takagi, Pigmented cosmetic dermatitis
and coal tar dyes. Contact Dermatitis, 1977. 3(5): p. 249-56.
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2.
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Goncalo, S., I. Sousa, and A.
Moreno, Contact dermatitis to coal
tar. Contact Dermatitis, 1984. 10(1): p. 57-8.
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3.
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McKee,
R.H. and H.I. Maibach, The phototoxic and allergenic potential
of EDS liquids. Contact Dermatitis, 1985. 13(2): p. 72-9.
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4.
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Riboldi, A., et
al., Contact dermatitis to coal tar in psoriasis.
Contact Dermatitis, 1986. 14(3): p. 187-8.
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5.
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Conde-Salazar,
L., et al., Occupational coal tar dermatitis.
Contact Dermatitis, 1987. 16(4): p. 231
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6.
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Illchyshyn, A.,
P.H. Cartwright, and A.G. Smith, Contact sensitivity
to newsprint: a rare manifestation of coal tar allergy. Contact Dermatitis,
1987. 17(1): p. 52-3.
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7.
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Roesyanto,
I.D., T.W. van den Akker, and T.W. van Joost, Wood
tars allergy, cross-sensitization and coal tar. Contact Dermatitis,
1990. 22(2): p. 95-8.
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8.
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Burden,
A.D., M. Stapleton, and M.H. Beck, Dithranol allergy:
fact or fiction?. [Review]. Contact Dermatitis, 1992. 27(5):
p. 291-3.
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9.
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Cusano,
F., M. Capozzi, and G. Errico, Allergic contact dermatitis
from coal tar. Contact Dermatitis, 1992. 27(1): p. 51-2.
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10.
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Burden,
A.D., H. Muston, and M.H. Beck, Intolerance and contact
allergy to tar and dithranol in psoriasis. Contact Dermatitis, 1994. 31(3): p. 185-6.
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