The word paresthesia is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 16
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (71 words)
aerates, aeriest, apteria, ashiest, asperse, aspires, atheise, atresia, easiest, hapters, harpies, harpist, hastier, heapers, hearses, heaters, heiress, hessite, hetaera, paresis, pariahs, parties, pasters, pastier, pasties, peatier, persist, pesters, phrases, pirates, praises, preheat, presets, priests, rapists, rashest, raspish, reheaps, reheats, repaste, repasts, repeats, reseats, reshape, reships, respite, resteps, retapes, sarapes, satires, satraps, searats, seastar, seaters, serapes, seraphs, seriate, shapers, sharpie, sherpas, sparest, spheres, spiraea, spireas, spriest, sprites, stripes, teasers, tephras, traipse, trashes