This method aims to change sleep habits with a clinicians help and the use of tools such as a sleep diary.Exposure, relaxation and rescripting therapy is used to treat PTSD-related nightmares. This intervention combines Imagery Rehearsal Therapy with exposure and relaxation techniques. The main objective is to work on the trauma-related themes of nightmares.Research has been undertaken to investigate if sufferers of nightmares could benefit from the ability to be aware that they are indeed dreaming, a process known as lucid dreaming. The Lucid Dreaming Therapy is a specific method of the Imagery Rehearsal Therapy. The dreamer is conscious during his dream and can modulate it. Consequently, anxiety decreases, controllability increases, expectations change, which will impact the frequency of nightmares. Several studies have shown significant results with the lucid dreaming therapy. Two studies indicate a decrease of the nightmare frequency after only 12 weeks and one study shows, in 80% of the cases, a total disappearance of the nightmares after one year. Although these studies showed the efficacy of this therapy in the reduction of nightmare frequency on patients from the general population, so far evidence for this treatment is still weak.Systematic Desensitization, using graduated exposure, has been shown to be efficient to treat chronic nightmares. The person has to face the frightening elements of nightmares in a gradually way, from the less to the most stressful. When the person starts to feel unsecure, she has to manage the stress by applying a relaxation technique. Pharmacological treatments
Pharmacological treatments could be also efficient to treat nightmare disorder.
The maxillary sinus is connected to the nose and therefore fluid can come out of the nostrils when drinking· Change in sounds produced from the nose and the voice – specifically a whistling sound whilst speaking· Taste can be affected

Signs
· Visible hole between mouth and sinus
· Fracture of the floor of the maxillary sinus creating a communication to the oral cavity (e.g. as seen following trauma).· Air bubbles, blood or mucoid secretion around the orifice can be seen as air passes from the sinus into the oral cavity through the communication. Diagnosis
- Patient history - Diagnosis is usually based on clinical examination and reported symptoms. Therefore, a good history and understanding of the patient’s symptoms is key. - Undertake a complete extraoral and intraoral examination using a dental mirror alongside good lighting. When assessing the socket following an extraction look for granulation tissue in the socket which may represent normal healing. Assess for the presence of visible an opening/hole between the oral cavity and the maxillary sinus. - Imaging can be useful. However, radiographs only show if there is a breach in the bony floor of the antrum. Even if there is a breach in the bony floor then the Schneiderian membrane may still be intact. Depending on the size of the potential communication and in what context, a small radiograph inside the mouth may be sufficient (a periapical) to assess for any break in the bone of the sinus floor which may indicate an OAC.