The 35-pound beams lock together to make a rigid base for the tower. The legs on the corners of the base adjust up and down over a 5-foot range to make up for uneven floor levels. The new, patented, Light Bulb Scaffoldâ¢ System is the solution to all your access problems.
Acid reflux is the most common cause of chronic laryngitis. But chronic laryngitis may be caused by more severe problems such as nerve damage, sores, polyps, cancer, or hard and thick lumps (nodules) on your vocal cords. The vocal cords are the vibrating elastic bands inside the larynx that produce your voice.
Colds, which are caused by viruses, are the most common cause of laryngitis. Other viral causes include measles. Although rare, bacterial infections, such as diphtheria, can also cause laryngitis. Certain activities may strain the vocal cords to cause inflammation and lead to laryngitis. Examples of these types of activities include yelling at a sporting event or concert and working as a professional singer. Silvers points out that all causes of laryngitis cause hoarseness, but not all hoarseness is laryngitis.