The signs and symptoms depend upon the type of OM, and may include: * Pain, which is severe, throbbing and deep seated and often radiates along the nerve pathways. * Initially fistula are not present. * Headache or facial pain, as in the descriptive former term "neuralgia-inducing" (cavitational osteonecrosis). * Fibromyalgia. * Chronic fatigue syndrome. * Swelling. External swelling is initially due to inflammatory edema with accompanying erythema (redness), heat and tenderness, and then later may be due to sub-periosteal pus accumulation. Eventually, subperiosteal bone formation may give a firm swelling. * Trismus (difficulty opening the mouth), which may be present in some cases and is caused by edema in the muscles. * Dysphagia (difficulty swallowing), which may be present in some cases and is caused by edema in the muscles. * Cervical lymphadenitis (swelling of the lymph nodes in the neck). * Aesthesia or paresthesia (altered sensation such as numbness or pins and needles) in the distribution of the mental nerve. * Fever which may be present in the acute phase and is high and intermittent * Malaise (general feeling of being unwell) which may be present in the acute phase * Anorexia (loss of appetite). * Leukocytosis (elevated numbers of white blood cells) which may be present in the acute phase * Elevated erythrocyte sedimentation rate and C reactive protein are sometimes present. * An obvious cause in the mouth (usually) such as a decayed tooth. * Teeth that are tender to percussion, which may develop as the condition progresses. * Loosening of teeth, which may develop as the condition progresses. * Pus may later be visible, which exudes from around the necks of teeth, from an open socket, or from other sites within the mouth or on the skin over the involved bone. * Fetid odor. Unlike acute OM in the long bones, acute OM in the jaws gives only a moderate systemic reaction and systemic inflammatory markers, such as blood tests, usually remain normal. Acute OM of the jaws may give a similar appearance to a typical odontogenic infection or dry socket, but cellulitis does not tend to spread from the periosteal envelope of the involved bone. If the infection is not controlled, the process becomes chronic and visible signs may be present, including draining fistulas, loosening of teeth and sequestra formation. Untreated chronic<unk>  tends to feature occasional acute exacerbations.
Osteomyelitis of the jaws
Cysts of the jaws
Osteonecrosis of the jaw
Metastatic tumor of jaws
Hemifacial hypertrophy
Dental abscess
Melanocytic oral lesion
Onycholysis