It causes an ugly sore on the skin but is not usually fatal.

Knismesis is annoying sensation caused on the skin from a light movement such as a crawling insect.

The procedure can cause mild discomfort, especially on the skin of the face and neck, but sensitivity varies.

The excess oil causes normal bacteria on the skin to flourish, creating inflammation.

This is the body's way of preserving its own heat by causing the hairs on the skin to stand up, thus reducing heat loss.

Radiotherapy can also cause side effects of nausea, rash on the skin, and vomiting, for example.

In addition, some caused toxic reactions on the skin.

This is a toxic component, that could cause allergic reactions on the skin and also several problems in the respiratory system.

Rosacea often causes red patches on the sensitive skin of the face.