December 2015 in “Journal of Neurology and Stroke” A man had a stroke after getting a scalp injection for hair loss.
March 2025 in “Journal of Cosmetic Dermatology” Botulinum toxin type A may widen certain arteries, but more research is needed.
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July 2025 in “Journal of Clinical Medicine” Cosmetic procedures can cause serious eye problems, so awareness and safety are crucial.
January 2019 in “Headache” Peripheral nerve blocks are a safe and effective way to treat various headaches and provide lasting pain relief.
The conclusion is that closing scalp wounds is possible, but restoring hair without donor material is still a major challenge.