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).
A heart arrhythmia may also cause dizziness, fainting or lightheadedness. Another heart disease problem is caused by heart defects. Often present at birth, these heart defects may cause water retention or swelling throughout the body. Heart defects can cause the skin to take on a blue hue due to oxygen deprivation.