1) Raising a blister 
• (a.) Attracting the humors to the skin; exciting action in the skin; blistering. • (n.) An external application to the skin, which produces a puriform or serous discharge by exciting inflammation; a vesicatory.
Ep'i·spas'tic adjective [ Greek ..., from ... to draw to, attract; ... to + ... to draw: confer French épispastique .] (Medicine) Attracting the humors to the skin; exciting action in the skin; blistering. 
raising a blister.