Sayyiduna Anas bin Malik (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) "granted permission for ruqyah for facial palsy (laqwah), for a sore that appears on the side (namlah), and for the sting of a venomous creature."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19590