Any wound, insect bite, burn, rash, blister, graze, bruise or other lesion may become infected. Sometimes, a swelling due to a sprain may become infected, especially if the overlying skin is broken. Always check for signs of infection which usually appears about two days later.
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Signs of infection include:
redness, warmth, swelling, increasing pain and tenderness
formation of pus (yellow, green or cloudy) which may lead to an abscess
red streaking around the wound which seems to spread slowly in the direction of the heart
swollen lymph nodes in the groin or armpit of the affected limb, or in the neck
fever (only if the infection is more advanced)
See a doctor if these signs appear. You may require an antibiotic and/or drainage of the infection.
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