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Long tapered sclereids supporting a leaf edge in Dionysia kossinskyi. Leaves contain a variety of types of sclereids. In the mesophyll, two distinct sclereid structures are found. Sclereids in a diffuse pattern are dispersed throughout the leaf tissue, and sclereids in a terminal pattern are concentrated about the tips of leaf veins.
Alfred Blaschko, a private practice dermatologist from Berlin, first described and drew the patterns of the lines of Blaschko in 1901. He obtained his data by studying over 140 patients with various nevoid and acquired skin diseases and transposed the visible patterns the diseases followed onto dolls and statues, then compiled the patterns onto a composite schematic of the human body.
Systemic scleroderma, or systemic sclerosis, is an autoimmune rheumatic disease characterised by excessive production and accumulation of collagen, called fibrosis, in the skin and internal organs and by injuries to small arteries. There are two major subgroups of systemic sclerosis based on the extent of skin involvement: limited and diffuse.
[9] [8] Children who survive the first year of life often have long-term problems such as red skin, joint contractures and delayed growth. [5] The condition affects around 1 in 300,000 births. [ 7 ] It was first documented in a diary entry by Reverend Oliver Hart in America in 1750.
Skin diseases are running rampant in Gaza, health officials say. On his wrists, he had open sores from scratching. Lice, scabies, rashes plague Palestinian children as skin disease runs rampant in ...
The skin weighs an average of four kilograms, covers an area of two square metres, and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. [1] The two main types of human skin are: glabrous skin, the hairless skin on the palms and soles (also referred to as the "palmoplantar" surfaces), and hair-bearing skin. [3]
Most children with progeria appear normal at birth and during early infancy. [11] Children with progeria usually develop the first symptoms during their first few months of life. The earliest symptoms may include a failure to thrive and a localized scleroderma-like skin condition. As a child ages past infancy, additional conditions become ...
PAPA syndrome usually begins with arthritis at a young age, with the skin changes more prominent from the time of puberty. [4] The arthritis is the predominant feature, noted by its juvenile onset and destructive course. Individuals often recall episodes of arthritis precipitated by a traumatic event.