Alzheimer's disease and Pick's disease

Alzheimer's disease noun - A progressive form of presenile dementia that is similar to senile dementia except that it usually starts in the 40s or 50s; first symptoms are impaired memory which is followed by impaired thought and speech and finally complete helplessness.

Pick's disease and Alzheimer's disease are semantically related. In some cases you can replace phrase "Pick's disease" with "Alzheimer's disease", this phrases are similar.

Pick's disease noun - A progressive form of presenile dementia found most often in middle-aged and elderly women and characterized by degeneration of the frontal and temporal lobes with loss of intellectual ability and transitory aphasia.

Alzheimer's disease and Pick's disease are semantically related. Sometimes you can replace phrase "Alzheimer's disease" with "Pick's disease", this phrases are similar.