The booming U.S. economy, in which imports tripled from $23 million in 1790 to $78 million in 1807, brought in far more tariffs to pay off the debt. Still, the deficit-cutting plan hit a setback when Jefferson decided in 1803 to add $15 million of debt to the mound he inherited.
Prolonged exposure to loud sounds is the most common cause of tinnitus. Up to 90% of people with tinnitus have some level of noise-induced hearing loss. The noise causes permanent damage to the sound-sensitive cells of the cochlea, a spiral-shaped organ in the inner ear.
The best characterization is that ringing in the ears is an indication of a possible issue in the inner ear or auditory system. Is ringing in the ears a disease? No. Ringing in the ears is believed to have many possible causes or contributing factors but it is not a disease. In some cases occupational exposure to loud noises is directly related to ringing in the ears. In other cases certain medications (including aspirin and ibuprofen) are thought to initiate or exacerbate tinnitus. In still other cases none of these factors is present, but ringing in the ears still occurs. Ringing in the ears is sometimes associated with impacted cerumen (ear wax) or other symptoms of inner ear disturbance such as dizziness or vertigo.