Correct spelling for the English word "Tisical" is [tˈɪzɪkə͡l], [tˈɪzɪkəl], [t_ˈɪ_z_ɪ_k_əl] (IPA phonetic alphabet).
For phthisic, which see.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.