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. 2021 Jul 6;14:779–814. doi: 10.2147/CCID.S315711

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© 2021 Heydenrych et al.

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Differential diagnosis of skin discoloration: 1. Hematoma; 2. Ecchymosis; 3. Neovascularization; 4. Hyperpigmentation; 5. The Tyndall effect; 6. Ischaemia. Notes: Adapted with permission from Pirayesh A, Bertossi D, Heydenrych I, editors. Aesthetic Facial Anatomy Essentials for Injections. Boca Raton: CRC Press; 2020.⁶⁶ Copyright 2020 Taylor & Francis.