
What Causes A Purple Rash On The Buttock?

Question: I have a deep purple color rash on upper right side of buttock near crack. It is itchy and seems to be raised.
Brief Answer:
Need more information
Detailed Answer:
Hello. Thank you for writing to us
I am dr.kakkar(dermatologist). I have gone through the query abd i have reviewed the image.
I would keep a possibility of either Herpes Zoster or Insect bite hypersensitivity. I request you to kindly upload a few more images so that i am able to confirm.
Also let me know that do you also have pain?burning sensation?
Regards
Need more information
Detailed Answer:
Hello. Thank you for writing to us
I am dr.kakkar(dermatologist). I have gone through the query abd i have reviewed the image.
I would keep a possibility of either Herpes Zoster or Insect bite hypersensitivity. I request you to kindly upload a few more images so that i am able to confirm.
Also let me know that do you also have pain?burning sensation?
Regards
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar


I have attached 2 more photos that I took this morning. Yes there is some minor pain, the area is very tender. Also I guess you could describe it as a slight burning sensation along with itching.
Brief Answer:
Need information on concurrent medical history/ treatment
Detailed Answer:
Hi.
Topically you may use a topical antibacterial ointment e.g Mupirocin ointment or Neosporin ointment, twice daily.
The recent Images show that it has spread and become confluent. Herpes zoster is a possibility, however I would also like keep another differential diagnosis of Retiform Purpura.
I would like to know whether are you on some other medical treatment ? on any anticoagulants like warfarin or heparin ?
Awaiting
Regards
Need information on concurrent medical history/ treatment
Detailed Answer:
Hi.
Topically you may use a topical antibacterial ointment e.g Mupirocin ointment or Neosporin ointment, twice daily.
The recent Images show that it has spread and become confluent. Herpes zoster is a possibility, however I would also like keep another differential diagnosis of Retiform Purpura.
I would like to know whether are you on some other medical treatment ? on any anticoagulants like warfarin or heparin ?
Awaiting
Regards
Above answer was peer-reviewed by :
Dr. Arnab Banerjee


No I am not on any anticoagulants. I take 81mg aspirin once daily.
Brief Answer:
Likely herpes zoster
Detailed Answer:
Thank you.
Herpes zoster S 2 or S 3 dermatome is the most likely diagnosis.
I would suggest an Oral antiviral e.g Valacyclovir 1gm, 3x daily for a week(Please obtain the necessary prescription from your local physician).
Topically you may use antibacterial ointment as already mentioned.
Regards
Likely herpes zoster
Detailed Answer:
Thank you.
Herpes zoster S 2 or S 3 dermatome is the most likely diagnosis.
I would suggest an Oral antiviral e.g Valacyclovir 1gm, 3x daily for a week(Please obtain the necessary prescription from your local physician).
Topically you may use antibacterial ointment as already mentioned.
Regards
Above answer was peer-reviewed by :
Dr. Arnab Banerjee


Thank you I just made an appointment with my doctor for Friday.
Brief Answer:
You are welcome
Detailed Answer:
Thank you for writing to us. You can get back to me for any assistance.
Regards
You are welcome
Detailed Answer:
Thank you for writing to us. You can get back to me for any assistance.
Regards
Note: Hope the answers resolves your concerns, however for further guidance of skin related queries consult our Dermatologist.Click here to book a consultation
Above answer was peer-reviewed by :
Dr. Nagamani Ng

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