1 Scroll down to the bottom of the page and click the link labeled Get Add-ons to navigate to the Internet Explorer Gallery Add-ons webpage. 2  Select an add-on category from the list of options in the column or use the search engine to locate a particular add-on, extension or plug-in from the available options provided. Click the link labeled Find more toolbars and extensions, located in the lower-left corner of the dialog box, to be redirected to the Internet Explorer Gallery's webpage. 2  Scroll down to the bottom of the page and click the link labeled Get Add-ons to navigate to the Internet Explorer Gallery Add-ons webpage.
PDH may refer to: 1  Angiotensin-converting enzyme, an enzyme. 2  Plesiochronous digital hierarchy, a technology used in telecommunications networks.
Parkinson's disease (PD, also known as idiopathic or primary parkinsonism, hypokinetic rigid syndrome (HRS), or paralysis agitans) is a degenerative disorder of the central nervous system mainly affecting the motor system.arkinson's disease is more common in older people, with most cases occurring after the age of 50; when it is seen in young adults, it is called young onset PD (YOPD). The main motor symptoms are collectively called parkinsonism, or a parkinsonian syndrome. The disease can be either primary or secondary.