A new study in the Journal of Investigative Dermatology finds that slightly cold temperatures may worsen itch from allergic reaction and skin inflammation. The researchers reported that intense cold has been known to reduce the itch response, but slight cold, especially in cases where the temperature changes from normal, to slightly cold, back to normal actually makes itchiness worse.
This has important consequences for people experiencing skin allergies, irritation, dry skin, or more advanced skin inflammation, such as in eczema, because this means that physically moving through various temperatures can make itchiness better or worse.
This would be especially important to keep in mind during winter months, where skin allergy sufferers may be moving from warm air to cold air, back to warm air.
This change in temperature, combined with dry, cold air, and winter fabrics such as wool, acrylic, and knit can make dry skin and eczema symptoms worse.
If you live in a place with a cold season, be sure to keep your skin well hydrated, and to avoid multiple, rapid temperature changes. This will reduce the itchiness factor.
Filed under General Skin Care Information by 
Dermatitis (inflammation of the skin) impacts more than 6 million people each year, many of whom seek medical relief for their itchiness. Dermatitis can be triggered by any number of skin conditions, common household ingredients, or animals.
People can get dermatitis, for instance, when they come in contact with mosquitos, snails, lice, poison ivy, poison oak, or when they have dry skin or staph infections. Skin conditions like psoriasis, eczema, and sunburn can also increase the itchy factor. Finally stress and too frequent use of antibacterial soaps can also increase the scratchiness quotient.
What causes our need to itch?
Put simply, some of our nerves are responsive to itchiness. Histamine, the protein released in our bodies during an allergic reaction, tells our itchy nerves to send information to the spinal cord, and, ultimately, the brain. Our brain activates certain sites in our brain; these are similar to the ones which are activated when we’re in pain.
Antihistamines (commonly prescribed for allergies and itches) ‘turn off’ the signal from the skin’s surface to the brain. New research says there are other types of nerve-itchy fibers than just the histamine ones, and that these recently discovered fibers may be responsible for the itch associated with more chronic conditions.
This new research suggests that people may scratch because, by doing so, this stimulates pleasure systems in the brain.
Too much scratching, though, can leave your skin broken, bleeding, and unable to provide its normal barrier to the environment.
So the point of the story? A little scratching is ok, too much is not.
Filed under The Latest Skin Care News by
