Kokkina means "red" in Greek — the colour of blood, and of every secret your body keeps. Kokkina opens real, documented medical cases and solves them clue by clue. Strange symptoms. Missed diagnoses. Bodies that did something no one expected — and the science that finally explained it. No gore. No guesswork. Every case is built from published medical case reports, and all sources are listed in each video's description. New Case Files every week. Shh… every body keeps a secret. — Kokkina is for education and entertainment only and does not provide medical advice. Patients in our cases are de-identified. If you're worried about a symptom, please talk to a qualified healthcare professional.