Dementia is a progressive disease that affects a person's ability to communicate, think and care for himself. Dementia is the state of damaged brain cells that may occur from an injury, stroke or genetic anomaly. Alzheimer's disease is perhaps one of the most widely-known forms of dementia. Recognizing the signs of dementia in a loved one can play a role in early diagnosis and treatment.
Memory Loss
According to the American Academy of Family Physicians, memory loss is a very common sign of dementia. Short-term memory is most affected, and may manifest itself by a person repeatedly asking the same question.
Mood Changes
Personality and mood changes may indicate dementia, according to the Alzheimer's Disease International organization. Mood swings, stoicism and irritability are common characteristics of someone who suffers from dementia.
Loss of Interest
Depression and dementia may go hand in hand, especially when it comes to interest in hobbies. People who formerly enjoyed spending time with friends and participating in activities may suddenly have no interest.
Disorientation
Disorientation in both space and time may be a symptom of dementia. A person affected by the disorder may not remember what year it is or where she is. Leaving the house alone may become risky if the person with dementia cannot remember how to get home.
Language Problems
People who are in the early stages of dementia may have a hard time remembering appropriate word and phrases during everyday conversation. This difficulty with language may create frustrating situations for all people involved.


