Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† asthmătĭcus, a, um, adj., = ἀσθματικός, afflicted with shortness of breath or coughing [ἆσθμα; cf. Cels. 4, 4, 2], asthmatic: asthmaticis in vino (radicem altheae) bibendam dare, Plin. 20, 21, 84, § 230 (Jan, spasticis); 26, 7, 19, § 34.