Rash is a symptom that causes the affected area of skin to turn red and blotchy, and to swell. A rash may cause spots that are bumpy, scaly, flaky, or filled with pus. Rashes can vary in location, pattern and extent and may occur in any area of the body. A buttock rash can have a variety of causes, and it may indicate something occurring around the buttock itself or suggest a systemic (body-wide) condition.
Some of the commonly occurring conditions that can result in buttock rash are listed below. None of them have buttock rash as the "classical" presenting feature. However, the rash associated with these conditions may occur in the buttocks region also.
In some cases, buttock rash may be a symptom of a life-threatening condition that should be evaluated immediately in an emergency setting. Seek immediate medical care (call 911) if you, or someone you are with, have buttock rash along with other serious symptoms including: