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Popliteal pterygium syndrome, a congenital condition affecting the face, limbs, or genitalia but named after the wing-like structural anomaly behind the knee. Pterygium (eye) or surfer's eye, a growth on the cornea of the eye. Pterygium colli or webbed neck, a congenital skin fold of the neck down to the shoulders.
Pterygium should be differentiated from pinguecula, which is histologically and etiologically similar to pterygium. [17] [18] Unlike pterygium, pinguecula is seen only on the conjunctiva, it will not progress to limbus or cornea. Another condition which is similar to pterygium is inflammatory adhesion of conjunctiva to cornea known as ...
A webbed neck, or pterygium colli, is a congenital skin fold that runs along the sides of the neck down to the shoulders. There are many variants. There are many variants. Signs and symptoms
Popliteal pterygium syndrome (PPS) is an inherited condition affecting the face, limbs, and genitalia. [1] The syndrome goes by a number of names including the popliteal web syndrome and, more inclusively, the facio-genito-popliteal syndrome .
Pterygium inversum unguis or ventral pterygium is characterized by the adherence of the distal portion of the nailbed to the ventral surface of the nail plate. [ 3 ] : 788 The condition may be present at birth or acquired, and may cause pain with manipulation of small objects, typing, and close manicuring of the nail.
The bites may be pimple-like, blister-like or similar to hives. They typically appear in specific areas on the lower body where tight clothes meet skin, like at the cuffs of your socks or the ...
“It started to become a bit of an obsession,” recalled the photographer, who recently published a book of his starling images. “And every night that we went down, we learned a little bit more.
The brightness of the Purkinje images can be determined using Fresnel's equation: = (′) / (′ +), where and ′ are the refractive indices before and after the reflecting surface. Purkinje image P1 is the brightest of the four, then P3 and P4 (P3 and P4 have about the same brightness), then P2.