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50% of males, 25% of females (pattern hair loss by age 50) [ 4][ 6] Hair loss, also known as alopecia or baldness, refers to a loss of hair from part of the head or body. [ 2] Typically at least the head is involved. [ 4] The severity of hair loss can vary from a small area to the entire body. [ 7] Inflammation or scarring is not usually ...
Non scarring hair loss, also known as noncicatricial alopecia is the loss of hair without any scarring being present. [ 1] There is typically little inflammation and irritation, but hair loss is significant. This is in contrast to scarring hair loss during which hair follicles are replaced with scar tissue as a result of inflammation.
Sensorineural hearing loss ( SNHL) is a type of hearing loss in which the root cause lies in the inner ear, sensory organ ( cochlea and associated structures), or the vestibulocochlear nerve ( cranial nerve VIII). SNHL accounts for about 90% of reported hearing loss. [citation needed] SNHL is usually permanent and can be mild, moderate, severe ...
[6] [7] Hearing loss may occur in one or both ears. [2] In children, hearing problems can affect the ability to acquire spoken language, and in adults it can create difficulties with social interaction and at work. [8] Hearing loss can be temporary or permanent. Hearing loss related to age usually affects both ears and is due to cochlear hair ...
Cutis verticis gyrata is a medical condition usually associated with thickening of the scalp. [ 1] The condition is identified by excessive thickening of the soft tissues of the scalp and characterized by ridges and furrows, which give the scalp a cerebriform appearance. Clinically, the ridges are hard and cannot be flattened on applying pressure.
Presbycusis. Presbycusis (also spelled presbyacusis, from Greek πρέσβυς presbys "old" + ἄκουσις akousis "hearing" [ 1] ), or age-related hearing loss, is the cumulative effect of aging on hearing. It is a progressive and irreversible bilateral symmetrical age-related sensorineural hearing loss resulting from degeneration of the ...
Pattern hair loss (also known as androgenetic alopecia ( AGA) [ 1]) is a hair loss condition that primarily affects the top and front of the scalp. [ 2][ 3] In male-pattern hair loss ( MPHL ), the hair loss typically presents itself as either a receding front hairline, loss of hair on the crown and vertex of the scalp, or a combination of both.
Inner ear regeneration. Inner ear regeneration is the biological process by which the hair cells and supporting cells (i.e. Hensen's cells and Deiters cells) of the ear proliferate ( cell proliferation) and regrow after hair cell injury. This process depends on communication between supporting cells and the brain.