What are the two types of intradermal injections?

Intradermal injections specifically involve administering medication directly into the dermis, which is just beneath the epidermis. The two types of injections that are recognized in this context relate closely to the layers of skin affected and the method of delivery.

Subcutaneous injections, while not classified as intradermal, are often considered in discussions about skin injections since they involve delivering substances into the tissue layer beneath the dermis. This method is commonly used for vaccinations and medications, providing a different absorption profile compared to intradermal injections.

Intramuscular injections occur even deeper, targeting muscle tissue, and are distinct from intradermal because they bypass the skin layers entirely to deliver medication straight into the muscle. Therefore, while they are types of injections, they do not relate directly to the intradermal method.

On the other hand, subdermal injections refer to administering substances below the dermis, but this term is not commonly used in clinical practice. Epidermal injections, which would refer to delivering medication into the epidermis, also do not fit into the standard categorization of injection types recognized in medical practice.

Therefore, recognizing that intradermal injections focus on the dermal layer aligns with the accepted practices, with the role