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.
The triesters of glycerol (triglycerides) are of greatest importance. Neutral triglycerides are important because of their ability to store energy. Triglycerides are esters of fatty acids with alcohols like glycerol. Fats and oils are generally called simple lipids.They are the main form in which fat is stored in plants and animals. Phospholipids: They are the common lipids found in cell membranes. Phosphoglyceride belong to a class of phospholipids.These contain glycerol, phosphates, two fatty acids and compound that may be choline, ethanolamine, serine or inositol. Lecithins and and ciphalins are representative of the phospholipids.ats and oils are generally called simple lipids. They are the main form in which fat is stored in plants and animals. Phospholipids: They are the common lipids found in cell membranes. Phosphoglyceride belong to a class of phospholipids.