In adults, eczema occurs most frequently on the hands and elbows, and in bending areas such as the inside of the elbows and back of the knees. In young children, eczema is often seen on the elbows, knees, face, neck, and scalp. Signs and symptoms of atopic eczema include: 1  Itchiness. 2  Skin redness.
Sphingolipids are composed of a backbone of sphingosine which is derived itself from glycerol. Sphingosine is N-acetylated by a variety of fatty acids generating a family of molecules referred to as ceramides. Sphingolipids predominate in the myelin sheath of nerve fibers.
Glycolipids and Glycoproteins. Membrane lipids other than phospholipids include the glycolipids glycosphingolipids (GSL) in animals. They contain a hydrophobic ceramide anchor N-acylsphingosine (C00195) and a hydrophilic headgroup composed of saccharides. They are normally found at the outer surface of cell membranes.lycolipids. Membrane lipids other than phospholipids include the glycolipids glycosphingolipids (GSL) in animals. They contain a hydrophobic ceramide anchor N-acylsphingosine (C00195) and a hydrophilic headgroup composed of saccharides.