4 Clinical signs of photoaging include dryness, deep furrows, irregular pigmentation, elastosis, and a leathery appearance.
These elements can cause redness and enlarged blood vessels, blotchy brown pigmentation, age and sun spots and a leathery appearance.
The latter is caused by extrinsic factors and includes signs such as a leathery appearance, dark/light pigmentation and deep furrows [ 2, 3].
Yet GAG does not deposit in the papillary dermis, instead it accumulates on the abnormal elastotic material, which makes it unavailable as a source of hydration resulting in a dull, leathery appearance of the skin (Kang, Fisher, et al 2001).
Skin photoaging by UVB radiation is clinically and histologically distinct from the natural aging process of the skin, and is characterized by wrinkles, uneven pigmentation, brown spots, laxity, and a leathery appearance [ 2].
This gives the chin a leathery appearance.
The winged louse flies, parasitic on birds, are usually dark brown in colour, flat in shape, and leathery in appearance.
(I've also run into veteran correspondents, who having covered wars for years, take on an almost William S. Burroughs appearance -- aged and leathery skin, pickled by their drug of choice, eyes with a hint of madness. And like junk for Burroughs, they need war to live happily, or, usually unhappily. It's not journalism if you're not being shot at).
Elastosis produces the leathery, weather-beaten appearance common to farmers, sailors, and others who spend a large portion of their life outdoors.
These rays also affect the appearance of skin, making it appear to have sag and have a leathery texture.
