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).
Anemia, chronic disease Anemia of chronic disease (ACD) can cause fatigue, pale skin, weakness, dizziness, headache and more. Anemia, iron deficiency Anemia , a lack of red blood cells, can cause fatigue, pale skin and gums, brittle nails, irritability, and more. Anemia Anemia, a lack of red blood cells, can cause fatigue, pale skin, weakness, dizziness, headache and more. Supraventricular tachycardia Supraventricular tachycardia is fast heart rhythm starting in one of the upper chambers of the heart.