Unintentional injections are delivered to a finger or thumb around 90 % of the time ; they cause intense pain locally but usually completely resolve .
The rate of unintentional injections using these devices is unknown but a 2009 review found that the rate is increasing .
Unintentional injections are delivered to a finger or thumb around 90 % of the time ; injections cause intense pain locally but usually completely resolve .
The rate of unintentional injections using these devices is unknown but a 2009 review found that the rate is increasing .