Quote:
Severe acne vulgaris is characterized by nodules and cysts:
Nodules: As opposed to the lesions mentioned above, nodular acne consists of acne spots which are much larger, can be quite painful, and can sometimes last for months.1 Nodules are large, hard bumps under the skin's surface.2 Scarring is common. Unresolved nodules can sometimes leave an impaction behind, which can flare again and again. Absolutely do not attempt to squeeze such a lesion. You may cause severe trauma to the skin and the lesion may last for months longer than it normally would. Dermatologists often have ways of lessening swelling and preventing scarring, such as injecting the lesion with cortisone.
Cysts: An acne cyst can appear similar to a nodule, but is pus-filled.2 They can be painful. Scarring is common with cystic acne. Squeezing an acne cyst may cause a deeper infection and more painful inflammation which will last much longer than if you had left it alone. Dermatologists often have ways of lessening swelling and preventing scarring, such as administering acortisone shot.
from Acne.org/types-of-acne.html
Anyway some tips on getting rid of these:
1. Use an astringent for acne and apply 3 times a day. This will help dry out the pimple. DON'T PICK.
2. Apply a washcloth with HOT water on it to the pimple and then gently (with clean hands) spread the skin apart around the pimple if you see a head. This will "pop" it without scarring (hopefully) only do this once or twice a week to further prevent scarring.
3. Repeat.