Alzheimer’s disease, Parkinson’s disease, Huntington’s disease and multi-infarct dementia are among the most common types of memory loss diseases. Memory loss, also sometimes referred to as dementia, is most commonly associated with aging, but can actually affect any individual at any age. This is particularly true in individuals who have developed specific memory loss diseases. Modern medicine may help slow the decline of memory loss attributed to certain diseases, but there is no way to cure any of them.

Memory loss may be acute or chronic. Acute cases are typically attributed to a sudden physical or emotional trauma. Chronic memory loss, however, is mostly due to one of several progressive memory loss diseases and is mostly irreversible.

As people age, minor memory loss is considered normal. That is, deficits in memory are not necessarily caused by any known memory loss diseases. The aging process is, however, often accompanied by the threat of certain diseases known to impair cognitive functioning.

One of the most common of all memory loss diseases is Alzheimer’s disease. As a progressive brain disorder, Alzheimer’s disease systematically destroys the brain’s cells and causes a slow decline in cognitive functioning. Alzheimer’s disease accounts for as much as 80% of all dementia cases. While Alzheimer’s disease mostly affects the elderly, individuals as young as 30 years of age may also be diagnosed with the disease.

Another of the more common memory loss diseases, Parkinson’s disease often shares some of the symptoms of Alzheimer’s disease. Along with affecting the motor skills of its victims, Parkinson’s disease is known to cause significant memory loss and dementia. While body tremors and an abnormal gait are among the most obvious symptoms of Parkinson’s, many patients eventually also develop extreme memory loss.

Among the lesser known memory loss diseases is Huntington’s disease. Characterized by a lack of coordination and involuntary movement, progressive memory loss is also a recognizable symptom of this particular brain disorder. Unlike Alzheimer’s and Parkinson’s disease, Huntington’s disease commonly affects people under 55 years of age and, in very rare cases, it may even affect children.

Multi-infarct dementia (MID) is also on the list of common memory loss diseases. Caused by multiple and often unrecognized strokes over a long period of time, damage sustained by important brain tissue slowly begins to interrupt a person’s cognitive abilities. MID appears to be very similar to Alzheimer’s disease and is often difficult to diagnose.