Under Perens' definition, open source describes a broad general type of software license that makes source code available to the general public with relaxed or non-existent copyright restrictions.
1 Illnesses such as the flu or colds. Home treatment of your flu and cold symptoms usually will relieve lightheadedness. 2  Vomiting, diarrhea, fevers, and other illnesses that cause dehydration.  Very deep or rapid breathing (hyperventilation).
Vertigo is a big culprit in the causes of dizziness and lightheadedness, which can be a result of inflammation of the inner ear or a symptom of a disease that involves excessive fluid buildup in the inner ear. Many prescription medications have dizziness and lightheadedness as a side effect. While there are many possibilities, the more common causes of dizziness and lightheadedness are sudden dramatic drops in blood pressure, low iron levels, low blood sugar and dehydration.