<s>[INST] My four year old daughter has been excessively sweating under her armpits.  She has a twin sister who does not have this problem.  I thought that young children do not sweat so much that you could smell body order under their arms.  Please advise.  Thank you. [/INST] Hi, this is focal excessive sweating commonly seen in young child Chat Doctor. In healthy child, causes are excess physical activities, anxiety, spicy diet, too much cold water, excessive heat or might be genetic (no comparison with twin child)Generally sweating occurs in body to lower down the surface temperature and to cool down skin. Treatment, you can apply antiperspirants(aluminum chloride) or topical anticholinergics which will reduce sweating to some extent. This kind of problem subsides usually as with the growing age. No need to worry. </s>