Continuous treatment or reliever use of inhaled corticosteroid in patients with cough variant asthma. Improvement effect of airway hyper-responsiveness.

Continuous treatment or reliever use of inhaled corticosteroid in patients with cough variant asthma. Improvement effect of airway hyper-responsiveness. - Effect of inhaled corticosteroid in cough variant asthma.

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000029900

Enrollment

100

Registered

2017-12-01

Start date

2017-11-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

cough variant asthma

Interventions

Continuous treatment and releiver use of inhaled corticosteroid and long acting beta 2 agonists in a year. only reliever use of inhaled corticosteroid and long acting beta 2 agonists.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients who diagnosed cough variant asthma at Yokohama city Minato red-cross hospital, and clinically have no symptoms in 3 months using ICS.

Exclusion criteria

Exclusion criteria: Patients with infectious disease of do not have effective antibiotics. Patients who have hypersensitivity for using drugs. Patients with Tuberculosis.

Design outcomes

Primary

Measure	Time frame
airway hyperresponsiveness	—

Secondary

Measure	Time frame
questionnaire of cough	—

Countries

Japan

Contacts

Public ContactKeiko Komatsuzaki

Yokohama city Minato red cross hospital allergy center

k-komatsuzaki.alle@yokohama.jrc.or.jp045-628-6381

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026