What supports the diagnosis of a ruptured tympanic membrane?

The presence of blood in the ear canal is a strong indicator of a ruptured tympanic membrane. When the tympanic membrane, or eardrum, tears due to trauma, infection, or pressure changes, it can lead to a direct connection between the middle ear and the external auditory canal. This rupture may allow blood and other fluids from the middle ear to enter the ear canal, thus making the presence of blood a supportive finding for the diagnosis.

Other symptoms like ear pain, constant ringing in the ears (tinnitus), or difficulty hearing can be associated with various ear conditions and do not specifically confirm a rupture of the tympanic membrane. While these symptoms may accompany a rupture, they are not definitive signs on their own. The presence of blood, however, provides clear evidence of a structural compromise in the ear, aiding significantly in the diagnostic process for a ruptured tympanic membrane.