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).
Lightheadedness usually gets better by itself, or is easily treated. However, it can be a symptom of other problems. There are many causes. Medicines may cause dizziness, or problems with your ear. Motion sickness can also make you dizzy. Vertigo can be a symptom of many disorders, as well.