Other olfactory disorders such as hyposmia and anosmia have been found to be a symptom of mood disorders (depression). However, it is not known what olfactory disorders occur and if they are indeed a symptom of a depressive disorder. It has been proposed that<unk>  may be an early sign of the neurodegenerative disease Parkinson's disease. It may also be a sign of an intracranial hemorrhage (brain tumours or epilepsy). Other studies have also found that the symptoms of<unk>  have been alleviated after the patient has been treated for depression. Another case of a 70-year-old male reported that his first abnormal symptoms were irregular bowel movements. After this the patient developed irregular eye movements and had developed a sleep and behavior disorder. He subsequently developed<unk> , in which what he smelled was described as "stinky and unpleasant". The patient did not display any of the following symptoms: loss of awareness; confusion; automatisms; convulsive seizures; auditory/visual hallucinations. Co-occurrence with other conditions<unk>  has been found to co-exist in patients with other disorders such as schizophrenia, epilepsy, alcoholic psychosis, and depression. It has also been found that many patients may begin to suffer from depression after the occurrence of<unk>  and have looked towards committing suicide. The occurrence of depression resulted from the severe symptoms of<unk>  as everything even food smelled spoilt, rotten and burnt for these patients. By the age of 80, 80% of individuals develop an olfactory disorder. As well 50% of these individuals suffer from anosmia. Migraines In 2011 Coleman, Grosberg and Robbins did a case study on patients with olfactory hallucinations and other primary headache disorders. In their 30-month long study, the prevalence rates for<unk>  turned out to be as low as 0.66%. In their findings, it was observed that a typical hallucination period was of 5–60 minutes, occurred either before or with the onset of head pain, and typically consisted of an unpleasant odor. It was also noted that<unk>  occurs most commonly among women having a migraine complaint. In their study, prophylactic therapy for headaches helped cure<unk>  in most of the patients. This finding is consistent with the findings of Schreiber and Calvert in 1986 which also mentioned the olfactory hallucinations before the occurrence of a migraine attack in four of their subjects.
Phantosmia
Ocular dysmetria
Buphthalmos
Anosmia
Nyctalopia
Dysosmia
Dysmelia
Aspermia