Some of the same reactions as with cochlear hyperacusis can also occur, along with sudden severe vertigo or nausea. In some cases, vestibular hyperacusis can affect the autonomic system and cause problems such as loss of consciousness, mental confusion, nausea, or extreme fatigue. In both cochlear and vestibular hyperacusis, headache is common.
The Elias Howe Company was a 19th and early 20th century musical firm located in Boston, USA and founded by Elias Howe, Jr.. His company was successful, selling more than a million copies of his music instruction books by 1892. Howe was cousin to the inventor of the sewing machine and related to Julia Ward Howe, composer of The Battle Hymn of the Republic.
The machines of the A. B. Howe Sewing Machine Co. may be dated by serial number approximately as follows: Serial Number Year 1-60 1854 61-113 1855 114-166 1856 167-299 1857 300-478 1858 479-1399 1859 No figures are available for 1860-1870, but 20,051 machines were manufactured in 1871. The machines of the [Elias] Howe Machine Co. are not believed to have begun with serial number 1, and no figures are available for 1865-1867. After that, the machines may be dated by serial number approximately as follows: