療 is built from the 疒 (sickness) and 尞 (signal fire (in 僚·療)) components.
It belongs to a phonetic family with 僚, 寮, 遼, and 瞭 — they share the 尞 component and the reading リョウ.
A common word using 療 is 医療 (いりょう), meaning “medical care, medical treatment”.
Kanji that look similar include 癒 and 癖.