Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
asthmatic [æsˈmætɪk] adj (breathing) астмати́ческий#
n астма́тик
asthmatic attack при́ступ а́стмы
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: