This condition causes blood blisters to form on the inner cheek, gums, tongue and/or the roof of the mouth. It is caused by the herpes simplex virus 1 and symptoms, like pain, a burning sensation, fatigue and fever, will be felt. You will consistently find a blood blister in the mouth of alcoholics, because alcohol can cause ulcerations inside your mouth.
Sudden hearing loss after stroke is less common than other neurological impairments, but it may be the initial presentation of vertebrobasilar ischemia, which is more common in the presence of vascular risk factors (Kim & Lee, 2009; H. Lee & Baloh, 2005; H. Lee & Cho, 2003; H. Lee et al., 2002; H. Lee, Whitman, Lim, Lee, & Park, 2001).
It has been established that temporary hearing loss could result with an overpressure level lower than 1 psi, and threshold eardrum rupture could occur at an overpressure of 5 psi; at 15 psi overpressure the rupture rate would rise to 50%. 103 kPa: Stewart, Charles. Blast Injuries. Colorado Springs: Charles Stewart & Associates, 2006: Page 33.