Occlusion: Occlusion means the act of closing off. In dermatology, occlusion is a technique used to increase the penetration of a topically applied substance, such as a corticosteroid.
Retinal vein occlusion is a common form of retinal vascular disease, especially in middle-aged and older individuals. It occurs when the vein providing outflow of blood from vasculature in the eye becomes blocked.
Follicular occlusion triad
This is a rare disorder most commonly seen in black Africans. It is characterized by the presence of severe nodulocystic acne, dissecting cellulitis of the scalp and hidradenitis suppurativa.
Radiofrequency Occlusion. A small catheter is inserted into the vein. The catheter delivers radiofrequency energy to the vein wall, causing it to heat, collapse, and seal shut.
Examples of ingredients used in deep peels include: Baker's phenol alone or under occlusion by tape. The tape drives the phenol deeper into the skin.
 See also: Body, Cosmetics, Antiseptic, Protein, Alcohol
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