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).
1 Light headedness: The medical term for this feeling is âpresyncope.â This feeling of being lightheaded can involve feeling dizzy and nauseous, having pale or clammy skin. 2  Blood pressure drop: A sudden drop in your blood pressure can cause this type of dizziness.