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).
Research the causes of these related symptoms that are similar to, or related to, the symptom Lightheadedness: 1  Vertigo (169 causes) 2  Balance difficulty (1691 causes)  Weakness (3752 causes)