Perforated Eardrum 
A hole or rupture in the eardrum, a thin membrane that separates the ear canal and the middle ear, is called a perforated eardrum. The medical term for eardrum is tympanic membrane. The middle ear is connected to the nose by the Eustachian tube, which equalizes pressure in the middle ear. A perforated eardrum is often accompanied by decreased hearing and sometimes liquid discharge. The perforation may be accompanied by pain, if it is caused by an injury or becomes infected. 
What causes eardrum perforation? 
If the ear is struck directly 
With a skull fracture After a sudden explosion If an object (such as a bobby pin, Q-tip, or stick) is pushed too far into the ear canal  
Middle ear infections may cause pain, hearing loss, and spontaneous rupture of the eardrum, resulting in a perforation. In this case, there may be infected or bloody drainage from the ear. Infections can cause a hole in the eardrum as a side effect of otitis media. Symptoms of acute otitis media (middle ear fluid with signs of infection) include a sense of fullness in the ear, some hearing loss, pain, and fever. 
In patients with chronic Eustachian tube problems the ear drum may become weakened and open up. 
How is hearing affected by a perforated eardrum? 
If the perforated eardrum is caused by a sudden traumatic or violent event, the loss of hearing can be great and tinnitus (ringing in the ear) may occur. Chronic infection as a result of the perforation can cause longer lasting or worsening hearing loss. 
How is a perforated eardrum treated? 
Usually with closure of the ear drum, hearing is improved. Several patches may be required before the perforation closes completely. If your physician feels that a paper patch will not provide prompt or adequate closure of the hole in the eardrum, or if paper patching does not help, surgery may be required. 
Your doctor will advise you regarding the proper care of a hole in the eardrum.