
Parapsoriasis en plaques large L41.4
Parapsoriasis en plaques, large: symptomless, well limited. disseminated stains and plaques. When the skin is wrinkled, a cigarette-paper-like pseudoatrophic architecture of the skin surface is visible (important diagnostic sign!).

Hyperpigmentation caloric L81.8
Hyperpigmentation caloric: Net-like hyperpigmentation caused by regular application of heat. No complaints.

Argyria L81.8
Gingival argry: circumscribed, sharply defined blue-black, symptom-free patches of the gingiva (and the upper lip, see previous illustration).

Hyperpigmentation postinflammatory L81.0

Hyperpigmentation caloric L81.8
Hyperpigmentation, caloric. 55-year-old female patient, who was treated for several months with heat applications because of back problems. At the heat contact points, partly anular, partly reticular, partly flat, dirty-brown hyperpigmentation can be seen.

Addison's disease E27.1
Addison's disease: clearly pigmented palm line patterns in otherwise normal palmar skin.

Melasma L81.1
Chloasma: Multiple, blurred, partly reticular, partly areal hyperpigmentations in a 47-year-old female patient; hormonal anti-conception.