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The parietal eye (very small grey oval between the regular eyes) of a juvenile bullfrog (Lithobates catesbeianus) Adult green anole (Anolis carolinensis) clearly showing the parietal eye (small grey/clear oval) at the top of its head Parietal eye of the Merrem's Madagascar swift (Oplurus cyclurus) is surrounded by a black-and-white spot on the skin, giving it the "three-eyed" appearance
Mosquito bites don't typically cause symptoms beyond the annoying, itchy bumps. A severe allergic reaction may come with a hive-like rash, swelling and inflammation of the bite area and swelling ...
The Philippine sailfin lizard also has a unique physical feature being a vestigial eye (which is also known as parietal or pineal eye) on the top of the lizard's skull that can detect differing angles of light from the sun and is thought to be used to find a sense of direction. [14]
Eyelid dermatitis is commonly related to atopic dermatitis or allergic contact dermatitis. [1] Volatile substances, tosylamide/formaldehyde resin, epoxy hardeners, insect repellent sprays, and lemon peel oil may be implicated, with many cases of eyelid contact dermatitis being caused by substances transferred by the hands to the eyelids.
This rare lizard-like creature is only found in New Zealand. ... but perhaps one of its most remarkable traits is its third eye. Sitting on the top of its head, the tuatara has a third eye ...
A variety of itching, often encountered in the eczema of elderly people, is formication; this is described as exactly like the crawling of myriads of animals over the skin. It is probably due to the successive irritation of nerve fibrils in the skin. At times patients who suffer from it will scarcely be persuaded that it is not due to insects.
Like some lizards, the tuatara possesses a parietal eye (also called a pineal eye or a third eye) covered by scales at the top of the head formed by the parapineal organ, with an accompanying hole in the skull roof enclosed by the parietal bones, dubbed the "pineal foramen", which is also present in fossil rhynchocephalians.
This unique feature is responsible for thermoregulation and hormone regulation, and possibly helps the lizards make decisions based on the seasons, weather, etc. [8] A March 2020 study of the central bearded dragon found that light-dependent magnetoreception occurs when light with a wavelength under 580 nanometers enters the parietal eye. [9] [10]