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).
Central nervous system: In some patients, lupus affects the brain or central nervous system. This can cause headaches, dizziness, depression, memory disturbances, vision problems, seizures, stroke, or changes in behavior.