Pus

Pustules (pustular miliary rashes) are small, superficial pustules with a needle on the top of the mule. It is relatively rare in the clinic and often occurs in the folds, such as the flexion of the limbs and the genitals, and it is also common in children's head and neck. Pustules are usually sterile or non-pathogenic cocci, but secondary infections can occur after ulceration.