The cavernous sinus within the human head is one of the dural venous sinuses creating a cavity called the lateral sellar compartment bordered by the temporal bone of the skull and the sphenoid bone, lateral to the sella turcica. Structure
The cavernous sinus is one of the dural venous sinuses of the head. It is a network of veins that sit in a cavity. It sits on both sides of the sphenoidal bone and pituitary gland, approximately 1 × 2 cm in size in an adult. The carotid siphon of the internal carotid artery, and cranial nerves III, IV, V (branches V1 and V2) and VI all pass through this blood filled space. Both sides of cavernous sinus is connected to each other via intercavernous sinuses. The cavernous sinus lies in between the inner and outer layers of dura mater. Nearby structures
Above: optic tract, optic chiasma, internal carotid artery. Inferiorly: foramen lacerum, and the junction of the body and greater wing of sphenoid bone. Medially: pituitary gland (hypophysis cerebri), and sphenoidal air sinus. Laterally: temporal lobe with uncus. Anteriorly: superior orbital fissure, and the apex of the orbit. Posteriorly: apex of petrous temporal bone. Venous connections
The cavernous sinus receives blood from:
Superior and inferior ophthalmic veins
Sphenoparietal sinus
Superficial middle cerebral veins
Inferior cerebral veinsBlood leaves the sinus via superior and inferior petrosal sinuses as well as via the emissary veins through the foramina of the skull (mostly through foramen ovale).
Xerotic eczema  is a form of eczema that is characterized by changes that occur when skin becomes abnormally dry, red, itchy, and cracked. It tends to occur more often during the winter and in dry conditions. Xerotic eczema is common in elderly people, though it is not uncommon for people in their 20s. It can appear in red, bumpy, pimple-like irritations. Treatment
The first method that should be taken when treating xerotic eczema is attempting to re-hydrate the dry skin using a humidifier and bathing/showering less frequently. Mild and moisturizing soaps should be used to prevent further irritation. Scratching the affected area should be avoided. Applying moisturizing lotion or anti-itch ointment frequently should help in reducing dryness. If the re-hydration process does not alleviate the symptoms, moisturizers such as Lac-Hydrin 5% or 12% moisturizer containing urea can be used; furthermore, if the skin becomes inflamed or cracked, mid- to high-potency corticosteroids can be used.A study published in 2005 found positive results from soaking the affected area in water for twenty minutes and then applying mid- to high-strength corticosteroid ointment. See also
Skin lesion


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