Although asthma usually begins before the age of five years, a few children affected will "outgrow" it during their teenage years but it usually persists if contracted in adulthood.
Nangona umbefu udla ngokuqala ngaphambi kokuba umntwana abe neminyaka emihlanu uyaphela ngokuya bekhula abantwana abambalwa xa bekwiminyaka eneshumi elivisayo kodwa xa ukuqale sele umdala uba nenkani.