Parents and pediatricians rush to treat low grade fever with acetaminophen and other powerful pain killers. Medical researchers refer to the over zealous treatment of non hazardous fever as fever phobia.
In his book, How to Raise a Healthy Child in Spite of Your Doctor, Robert S. Mendelsohn, MD writes that fever under 106 F is not dangerous in children 3+ months of age:
Most fevers are caused by viral and bacterial infections that the body's own defense mechanisms will overcome without medical help..
The common cold and influenza are the most common sources of elevated temperatures.. they can generate fevers that range all the way up to 105 degrees, but even at that level they are not a legitimate cause for alarm..
Untreated fevers caused by viral and bacterial infections do not rise inexorably and will not exceed 105 degrees.. (I suppose this includes anything below 106 as he explicitly states in next paragraph)
Only in the case of heatstroke, poisoning, or other externally caused fevers is this bodily mechanism over-whelmed and inoperative. It is in those cases that temperatures reach and exceed 106 degrees..
Is there any evidence that suggests that fever (from viral or bacterial origin) below 106 F has any long term negative effects in otherwise healthy children/toddlers/adults?
Similarly, in a report entitled Fever and Antipyretic Use in Children the authors write that:
Hyperthermia should be addressed promptly, because at temperatures above 41°C (105.8 F) to 42°C (107.6 F), adverse physiologic effects begin to occur. Studies of health care workers, including physicians, have revealed that most believe that the risk of heat-related adverse outcomes is increased with temperatures above 40°C (104°F), although this belief is not justified.
To be clear, it doesn't matter if you think fever is pleasant or not. Or if the benefit of reducing the pain caused by fever outweighs the benefit that fever provides in helping fight infection.
My question is simply: Are there any dangers associated with fever within the above mentioned range?