Asthma following household exposure to hydrofluoric acid.

BACKGROUND Almost all reports of respiratory health effects of hydrofluoric acid are derived from industrial settings and usually involved massive and conspicuous exposures. In the present report we describe a case of adult-onset asthma immediately following use of a household rust stain remover that contained an 8-9% aqueous solution of hydrofluoric acid (HF). METHODS This is a case-report. A literature search of hydrogen fluoride, and reactive airways dysfunction syndrome (RADS) was performed. RESULTS A previously healthy 26-year-old woman developed asthma immediately following inhalation exposure to hydrofluoric acid from a household cleaner, consistent with reactive airways dysfunction syndrome. The circumstances of exposure and possible mechanism of disease are discussed. CONCLUSIONS It is likely that this patient's use of the rust stain remover resulted in inhalation exposure to hydrofluoric acid well above any applicable standard, and hence constituted a "high level" irritant exposure capable of inducing reactive airways dysfunction syndrome. In our opinion, the presence of this concentration hydrofluoric acid in a consumer product may be unduly hazardous.