ALT Alt text: A set of four microscopic images (labelled A–D) shows capillaries under the fingernails of four different people, captured using nailfold videocapillaroscopy at 200× magnification. Each image includes a black horizontal line representing one millimetre of skin. Image A (top left): A healthy control subject with neatly arranged, uniform, hairpin-shaped capillaries. Capillary density is high (12 per mm), with no abnormalities. Image B (top right): A person who recovered from COVID-19 without Long Covid. Capillaries appear mostly normal, but two are visibly dilated (marked with asterisks). Density is slightly reduced (9 per mm). Image C (bottom left): A person with Long Covid. Capillaries are fewer and more irregular (5 per mm), with two showing abnormal twisted shapes (neoangiogenesis), marked by asterisks. Image D (bottom right): Another Long Covid patient. Capillaries appear darker, some are dilated (marked by two asterisks), and the density is moderately reduced (8 per m

ALT Understanding the Impact of COVID-19 on Personality and Brain Function: A Grim Reality or a Wake-Up Call Opinion: Kevin Kavanagh, MD, examines a summary of studies on how COVID-19 may damage the brain's frontal lobes, alter personality traits and cognitive functions, and potentially reshape society's dynamics.