Memantine is also especially useful in the treatment of patients with Alzheimer's disease and patients with vascular dementia.

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In general, cholinesterase inhibitors have shown some benefit for patients with vascular dementia, those with mixed Alzheimer's and vascular dementia, patients with the disease known as "dementia with Lewy bodies, " and dementia from Parkinson's disease.

CNN: Better understanding of dementia leading to more effective therapies

With windchills approaching the single digits and below zero, it is possible to develop frostnip with progression to frostbite in exposed areas in as little as 20-30 minutes, especially in those patients with peripheral vascular disease, a history of smoking or diabetes.

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Moreover, he says, the trial excluded patients at high risk for bleeding, such as those with central nervous system tumors or vascular problems.

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