The ear is the organ of hearing and, in mammals, balance. In mammals, the ear is usually described as having three parts—the outer ear, middle ear and the inner ear. The outer ear consists of the pinna and the ear canal. Since the outer ear is the only visible portion of the ear in most animals, the word "ear" often refers to the external part alone.The middle ear includes the tympanic cavity and the three ossicles. The inner ear sits in the bony labyrinth, and contains structures which are key to several senses: the semicircular canals, which enable balance and eye tracking when moving; the utricle and saccule, which enable balance when stationary; and the cochlea, which enables hearing. The ears of vertebrates are placed somewhat symmetrically on either side of the head, an arrangement that aids sound localisation.
Common Ear Diseases
Ear drainage or discharge is an obvious sensation that includes the draining of some kind of fluid flowing from the ear. Usually, the fluid is superfluous wax being expelled by the body through the ear canal. All the same, different kinds of otitis or infection on the ear can also be causes to stimulate ear drainage as a way of accelerating the process of healing.
Hearing loss, is also known as hearing impairment is a partial or totally inability to hear. A deaf person has blittle to no hearing. Hearing loss may occur in one or both ears. In children hearing problems can affect the ability to learn language and in adults it loss can be temporary or permanent.
Ear Pain\Ear Block usually occur in children, but they can occur in adults as well. An earache may affect one or both ears, but the majority of the time it is in one ear. It may be constant or come and go, and the pain may be dull, sharp, or burning. If you have an ear infection, fever and temporary hearing loss may occur. Young children who have ear infections tend to be fussy and irritable. They may also tug at or rub their ears.
Migraines and other types of headaches, such as tension headache and sinus headache, are painful. Migraine symptoms include a pounding headache, nausea, vomiting, and light sensitivity and are treated with antinausea drugs and abortive or preventive medications. Headache remedies include pain relievers. Migraines are believed to be due to a mixture of environmental and genetic factors. About two-thirds of cases run in families. Changing hormone levels may also play a role, as migraines affect slightly more boys than girls before puberty and two to three times more women than men. The risk of migraines usually decreases during pregnancy. The underlying mechanisms are not fully known.It is, however, believed to involve the nerves and blood vessels of the brain.