Scar tissue may refer to:

Medicine

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  • Scar, an area of fibrous tissue that replaces normal skin after injury
  • Granulation tissue, a product of healing in major wounds

Film and television

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Literature

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Music

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  • Scar Tissue (band), an American electro-industrial group
  • "Scar Tissue", a song by Red Hot Chili Peppers, 1999
  • "Scar Tissue", a song by Camila Cabello from Camila, 2018
  • "Scar Tissue", a song by Five Finger Death Punch from F8, 2020