Sinusitis can be divided into the following categories: 1  Acute sinusitis, defined as symptoms of less than 4 weeksâ duration (Fig. 2  Subacute sinusitis, defined as symptoms of 4 to 8 weeksâ duration; 3  Chronic sinusitis, defined as symptoms lasting longer than 8 weeks (Fig.
During a migraine, you may experience: 1  Pain on one side or both sides of your head. 2  Pain that feels throbbing or pulsing. 3  Sensitivity to light, sounds, and sometimes smells and touch.  Nausea and 1  vomiting. Blurred vision.  Lightheadedness, sometimes followed by fainting.
Typical episodic migraine lasts from hours to several days. However episodic migraine can turn into CHRONIC MIGRAINE (transformed migraine) in many patients. Chronic migraine is characterized by headaches more than 15 days a month with at least 8 of the headaches having migrainous symptoms. Often other conditions are present: anxiety, depression, panic, fibromyalgia and sleep disorders. In brief: Usually 4-72 hours.