I used to get this type of chill when I took over the counter diet pills. The ones that contained phenylpropanolamine. (sp?) I don't believe they sell these anymore due to concerns of stroke and heart problems. But is it possible he is taking some sort of decongestant, or diet pill?
I would get the chills in various parts of my body sort of in a circular limited place. Like an area of my scalp, or an area of my thigh.
I stopped the pills, it stopped the sensation. I felt anything that had that effect on my body couldn't be good.
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