Most patients will feel varying degrees of gustatory and olfactory involvement. Altered olfaction has been a common cause of taste loss and is considered by most patients to be a gustatory dysfunction. The ability to taste salty, sour, bitter and sweet can remain intact. The degree of olfactory dysfunction is governed by the bulbar nerve, which is composed of branches of the glossopharyngeal and vagus nerves. Most patients are hyposmia (i.e., decreased sensitivity to some or all odors). Does loss of taste or smell disorder have images on life? Usually, patients have a “loss of taste” or are often concerned about not being able to recognize spoiled or poisonous food odors due to altered taste, which can lead to weight loss. What are the common causes of this condition? Common causes include: obstructive (nasal polyps, deviated septum, nasal tumors); sensory (viral infections, chronic sinusitis, allergic rhinitis, smoking, toxic substance exposure, drug use); neurological (head trauma, Alzheimer’s disease, Parkinson’s disease, hypothyroidism, intracranial tumors, etc.) In most cases, the history is helpful in making a diagnosis, including the nature of symptoms, temporal changes, episodes, duration and type of symptoms. duration and type, etc. The presence of alterations in the olfactory conduction pathways of the nasal cavity or lesions of the sensory nerves. For example, regarding nasal congestion, runny nose and postnasal drip – suggesting a high likelihood of chronic sinusitis. Recent cold or flu-like symptoms, secondary to loss of smell suggest viral factors are more likely. The presence of recent head trauma, tobacco, cocaine’s etc. can affect the sense of smell. It is worth noting that certain medications (e.g. calcium channel blockers) can also affect the sense of smell.