Intradermal injection

Intradermal injection is a method of drug administration where a substance is injected into the dermis, one of the layers of the skin. This is contrasted with other methods like subcutaneous injections and intramuscular injections, where substances are injected into the subcutaneous tissue and muscle, respectively.

Pronunciation

• IPA: /ˌɪntrəˈdɜːrməl ɪnˈdʒɛkʃən/

Etymology

The term "Intradermal injection" is derived from the Latin words 'intra' meaning 'within' and 'dermis' meaning 'skin'. The term 'injection' is derived from the Latin 'injectionem', meaning 'a throwing in'.

Procedure

The intradermal injection is often used for sensitivity tests, like tuberculin and allergy tests, and local anesthesia tests. The most common site of intradermal injection is the inner surface of the forearm. The needle is inserted at a 5 to 15 degree angle to the skin.

Related Terms

• Dermis
• Drug administration routes
• Subcutaneous injection
• Intramuscular injection
• Tuberculin skin test
• Allergy test
• Local anesthesia

See Also

• Intravenous therapy
• Injection (medicine)
• Vaccine

External links

• Medical encyclopedia article on Intradermal injection
• Wikipedia's article - Intradermal injection

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