Infection can develop after an injury or wound to the skin,
a bite or sting, a tattoo or piercing, or other skin problem. Symptoms of
infection may include:
Increased pain, swelling, redness, or warmth
around the affected area.
Red streaks extending from the affected
Drainage of pus from the area.
nodes in the neck.
Scratching an itchy scalp can lead to skin irritation or
infection. Examples of infections that may affect the scalp include:
Infection of the hair shafts (folliculitis), which begins as a red, tender area at
or near the base of one or more strands of hair. Folliculitis may look like
small red pimples with a hair in the center of each one. The pimples may have
pus in them, and they often itch or burn.