Primary or focal hyperhidrosis may be further divided by the area affected, for instance palmoplantar hyperhidrosis (symptomatic sweating of only the hands or feet) or gustatory hyperhidrosis (sweating of the face or chest a few moments after eating certain foods).
The proverb The proof of the pudding is in the eating dates back to at least the 14th century. 1  The phrase is widely attributed to the Spanish author Cervantes in his novel The Ingenious Gentleman Don Quixote. The phrase is often incorrectly stated as the proof is in the pudding..
Add to that the concealed nature of pudding ingredients - whether in a blood pudding or one of the traditional sweet puddings full of dried fruit and nuts and enclosed in a dumpling crust - and the logic behind the expression becomes far less mysterious. Whatever its actual origins, we find the expression in print since the 17th century.