A small purplish lump on my face

Aug 22 20213 people replied
Description Of Condition:

The day before yesterday there was a small lump on my face that turned red-purple and hard, and it hurt a little to press on it.I don't know if it's a pimple or a mosquito bite.Now a small part of the left side of my face has swollen up. What is the cause and how should I treat it?

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