What Are The White Spots Under My Armpits?

This summer I just started noticing little white spots under both of my arms just above my armpits. I think they are from sweating because they aren't very big and I have them no where else. Could someone please confirm?

[Vanessa Lacuesta]

Hi

White spots in skin folds or intertriginous areas like the arm pits and the groin may be attributed to a fungal infection. Fungal infections such as tinea versicolor or corporis may present as whitish scales with a well delineated red border. You may need to keep the area dry as much as possible. Applying a hypoallergenic deodorant may help. Also, Fluocinonide 0.05% cream applied thinly over the area once daily for at least three days may help. After 3 days, observe if the rash has improved. If not then you need to have this reassessed by your doctor.