Monday, April 26, 2010
What causes an itch?
Many itches have medical causes like dry skin, insect bites, allergic reactions and psoriasis. If itching is caused by one of these it is best to refrain from scratching the site. As you may have experienced, scratching feels good for only a second and then the area itches worse than ever. Also, the bacteria under your nails may be enough to cause an infection at the site of the itch.
It appears that cold and itch travel the same nerve pathways so you can stop an itch by blocking the pathway with cold. Ice packs and menthol may temporarily stop an itch and can be reapplied frequently.