Different types of Amnesia and Symptoms: 

1. Anterograde amnesia - people with anterograde amnesia can recall memories from the past but cannot form new long-term memories. Their short-term memory remains intact. Usually the person cannot move things from their short term memory into long term memory so they can never recall events as they happen, names or faces of people they just met, etc. However, they may be able to learn new skills and recall how to do them as that often involves a different part of the brain. This is more common in individuals suffering from dementia and Alzheimer’s.
2. Retrograde amnesia - also known as fixation amnesia, is the inability to remember or recognize new information or new events that occurred after the amnesia’s onset. Retrograde amnesia, also known as evocation amnesia, is the inability to remember or recognize information or events that occurred prior to onset.
   
3. Emotional/hysterical amnesia - this is a very rare type of amnesia. Patients forget not only their past, but their very identity. A person could wake up and suddenly not have any sense at all of who they are - even if they look in the mirror they do not recognize their own reflection (the person in the mirror is a stranger). All the details in their wallet - driving license, credit cards, IDs - are meaningless. This type of amnesia is usually triggered by an event that the person's mind is unable to cope with properly. In most cases the memory either slowly or suddenly comes back within a few days. However, the memory of the shocking event itself may never come back completely.
   
4. Childhood amnesia - the patient cannot recall events from early childhood. Experts say this type of amnesia may be associated with language development. Others say it is possible that some memory areas of the brain were not fully mature during childhood.
5. Lacunar amnesia - loss of memory of a certain event. (see under movies "Eternal Sunshine of the Spotless Mind" based off this type of amnesia)
6. Prosopamnesia - the person cannot remember faces. People can either acquire prosopamnesia, or be born with it.
   
7. Source amnesia - the person can remember certain information, but does not know how or where they got that information.
   
8. Korsakoff syndrome - encountered for the first time in chronic alcoholics. The disorder tends to be progressive - it gradually gets worse and worse over time. Patients with Wernike-Korsakoff's psychosis also tend to have neurological problems, such as poor coordination, and the loss of feelings in the toes and fingers. It can also be caused by malnutrition. It is linked to thiamin deficiency.
9. Dissociative amnesia - people retain general memory but lose their personality. This causes people to create a new personality. Usually caused by stressful situations or trauma.
10. Transient global amnesia - total memory loss, the most severe type of amnesia. The person forgets everything about themselves, events, things prior to this. This can be reversed as the brain heals but the healing time lasts from days to years.