In their mind, HIV infection may be a natural result of a wrongful act. They may feel that HIV is a punishment for the crime they committed and that the guilt they have to bear is both reasonable and deserved. Culture often plays a big role in this.
What is it used for? Urea is used to treat chronic dry skin conditions, such as eczema. It is also used to treat skin conditions that cause dry, thickened, scaly, flaky and cracked skin (ichthyosis, xeroderma) and thickening of the outermost layer of the skin (hyperkeratosis). It is an emollient, also known as a moisturiser.
The traditional use for a barrier cream is to provide a barrier between the skin and the outside environment. These creams are often used by people who work with caustic chemicals or other hazards that would damage their skin. A more common use for barrier ointments is for people that suffer from urinary incontinence.