Learn why we itch and what scientists have discovered that may help chronic itchiness! Hosted by: Michael Aranda ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.co...
========== Itching. Just thinking about it is making me kinda
… itchy. An itch can be caused by all kinds of things. The usual culprits are things like bug bites,
poison ivy, or strands of hair brushing against your skin. But it’s also brought on by skin conditions
like eczema or psoriasis, as well as seemingly unrelated things, like brain tumors, diabetes
and chemotherapy. With such a wide range of causes, the itch
seems to be kind of mysterious. And it is! But in a 2013 study published in the journal
Science, two researchers from the National Institutes of Health discovered the physiology
of how itching works, which may eventually help chronic itchers find relief. Scientists used to think that an itch was
basically a low-level pain signal, meaning that o...