Classically, the increased pain when tilting the head forwards separates sinusitis from pulpitis.For cases of maxillary sinusitis, limited field CBCT imaging, as compared to periapical radiographs, improves the ability to detect the teeth as the sources for sinusitis. A coronal CT picture may also be useful. Chronic
For sinusitis lasting more than 12 weeks, a CT scan is recommended. On a CT scan, acute sinus secretions have a radiodensity of 10 to 25 Hounsfield units (HU), but in a more chronic state they become more viscous, with a radiodensity of 30 to 60 HU.Nasal endoscopy and clinical symptoms are also used to make a positive diagnosis. A tissue sample for histology and cultures can also be collected and tested. Nasal endoscopy involves inserting a flexible fiber-optic tube with a light and camera at its tip into the nose to examine the nasal passages and sinuses. Sinus infections, if they result in tooth pain, usually present with pain involving more than one of the upper teeth, whereas a toothache usually involves a single tooth. Dental examination and appropriate radiography aid in ruling out pain arises from a tooth. Treatment
Recommended treatments for most cases of sinusitis include rest and drinking enough water to thin the mucus. Antibiotics are not recommended for most cases.Breathing low-temperature steam such as from a hot shower or gargling can relieve symptoms. There is tentative evidence for nasal irrigation in acute sinusitis, for example during upper respiratory infections.
DSM-IV diagnosis
The past DSM-IV criteria for IED were similar to the current criteria, however, verbal aggression was not considered as part of the diagnostic criteria. The DSM-IV diagnosis was characterized by the occurrence of discrete episodes of failure to resist aggressive impulses that result in violent assault or destruction of property. Additionally, the degree of aggressiveness expressed during an episode should be grossly disproportionate to provocation or precipitating psychosocial stressor, and, as previously stated, diagnosis is made when certain other mental disorders have been ruled out, e.g., a head injury, Alzheimers disease, etc., or due to substance use or medication. Diagnosis is made using a psychiatric interview to affective and behavioral symptoms to the criteria listed in the DSM-IV.The DSM-IV-TR was very specific in its definition of Intermittent Explosive Disorder which was defined, essentially, by the exclusion of other conditions. The diagnosis required:

several episodes of impulsive behavior that result in serious damage to either persons or property, wherein
the degree of the aggressiveness is grossly disproportionate to the circumstances or provocation, and
the episodic violence cannot be better accounted for by another mental or physical medical condition. Differential diagnosis
Many psychiatric disorders and some substance use disorders are associated with increased aggression and are frequently comorbid with IED, often making differential diagnosis difficult. Individuals with IED are, on average, four times more likely to develop depression or anxiety disorders, and three times more likely to develop substance use disorders.