We're unable to sign you in at this time. Please try again in a few minutes.
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......


Arch Intern Med (Chic). 1921;27(2):184-191. doi:10.1001/archinte.1921.00100080047004.
Text Size: A A A
Published online

The causes and factors apparently responsible for bronchial asthma vary widely among different individuals. One feature common to all patients with this disease is the presenting symptom—a paroxysm of difficult breathing. In studying patients during intervals of freedom from these attacks, attempts have been made to associate other conditions with bronchial asthma. It has been considered as being due to a vasomotor neurosis,1 to an exudative diathesis,2 to increased tone of the vagus nerve,3 to sensitiveness to foreign proteins,4 to a disordered metabolism,5 bacterial infection of the respiratory tract,6 and to certain abnormalities in the nose.7

During the past winter a series of patients with bronchial asthma was studied in detail in the hope of correlating any findings which all, or nearly all, might present. From these individuals careful histories were obtained and physical examinations were made, with special reference to lesions of the nose and throat; signs of vagotonia;


Sign in

Purchase Options

• Buy this article
• Subscribe to the journal

First Page Preview

View Large
First page PDF preview





Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
Submit a Comment


Some tools below are only available to our subscribers or users with an online account.

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal

Related Content

Customize your page view by dragging & repositioning the boxes below.