Whiteheads– Whiteheads are simply clogged pores that are not inflamed. They are clogged below the surface of the skin, so they remain closed and flesh coloured, but create a little bump on the skin.
Blackheads – Blackheads are basically the same as whiteheads – a non-inflamed clogged pore – but the difference is that the top is open and therefore exposed to the air. The air oxidizes the sebum and keratin that’s stuck there and it turns black. oil blocked in pore becomes oxised
Papules – Papules occur when a whitehead or blackhead becomes inflamed – they are tender red bumps … usually fairly small, up to a cm in diameter, and somewhat raised. The defining factor is that they are not filled with pus, although they may go on to fill with pus later on and become a pustule
Pustules – Pustules are your classic zit. Hard, inflamed, and full of pus that has the defining white or yellow centre. May remind you of a volcano.
Nodular cystic– These are large (much larger than papules and pustules) painful bumps under the skin that take quite a while to go away and can create scarring.Nodules are generally hard and not filled with pus. Cysts are filled with pus and feel like fluid filled sacs underneath the skin.
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