Intradermal

Intradermal refers to something occurring within the dermis, the layer of skin between the epidermis and subcutaneous tissues. It is often used in the context of injections or tests that are given within the skin, such as the tuberculin skin test or allergy tests.

Overview

The dermis is the second layer of skin, located beneath the epidermis and above the subcutaneous tissue. It contains blood vessels, nerves, hair follicles, and sweat glands. The intradermal layer is where many important functions of the skin occur, including temperature regulation and sensation.

Intradermal injections are used for diagnostic tests and vaccinations. They are administered using a small needle that is inserted into the dermis. This method is used when a small amount of substance needs to be introduced into the body, as the dermis has a slower absorption rate than muscle tissue.

Intradermal Injections

Intradermal injections are commonly used in medicine for a variety of purposes. They are often used for vaccinations, such as the flu vaccine, and for diagnostic tests, such as the Mantoux test for tuberculosis.

The procedure for an intradermal injection involves inserting a small needle into the dermis layer of the skin, typically on the inner forearm. The needle is usually inserted at a 5 to 15 degree angle to the skin. The substance to be injected is then slowly introduced into the dermis.

Intradermal Tests

Intradermal tests are used to diagnose allergies and tuberculosis. The allergy skin test involves injecting a small amount of allergen into the skin and observing for a reaction. The Mantoux test, also known as the tuberculin skin test, involves injecting a small amount of tuberculin into the skin to test for a reaction indicative of tuberculosis infection.

See Also

• Dermis
• Epidermis
• Subcutaneous tissue
• Vaccination
• Allergy skin test
• Mantoux test

References

Intradermal Resources
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