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, iron deficiency Anemia , a lack of red blood cells, can cause fatigue, pale skin and gums, brittle nails, irritability, and more. Anemia, chronic disease Anemia of chronic disease (ACD) can cause fatigue, pale skin, weakness, dizziness, headache and more. Multiple sclerosis Multiple sclerosis is a disease of the nervous system causing difficulties with balance, speech, and movement.