<human>: How can I get rid of a persistent itch on my skin?
<bot>: One way to get rid of a persistent itch on your skin is by trying over-the-counter antihistamines. You can also try using an emollient such as petroleum jelly or calamine lotion, which may help soothe the itching and provide relief. If these measures don't work, you should consult with a doctor to determine if there are other underlying causes for the itch.