question-icon

What Causes Blister Over A Healed Injury?

default
Posted on Mon, 15 Dec 2014
Question: I tripped on a sidewalk and got a pretty deep scrape on my knee a few weeks ago. The scab finally healed up maybe 4 days ago, and now I've noticed that a blister filled with orange/red fluid has formed over the developing scar. This blister occurred over the last one or two days. Anything to be concerned over?
doctor
Answered by Dr. Robert Galamaga (45 minutes later)
Brief Answer:
Considerations

Detailed Answer:
thanks for sending the question.

I took a look at the picture that you sent. It does look quite inflamed but should gradually heal on its own. You might try to soak your name in some warm water for 15 to 20 minutes a couple of times per day for the next few days. This might help with the swelling.

I would also watch the amount of redness. If you see the redness expandinggradually you might need to see your doctor talk about antibiotics. In the meantime I would apply a generic topical antibiotic pointed to the area. Try not to squeeze or press on the area and your immune system should take care of the rest.

Sincerely,

Dr. Galamaga
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
default
Follow up: Dr. Robert Galamaga (13 minutes later)
Thanks! Any idea what causes blistering for a nearly healed wound? I've gotten plenty of cuts and scrapes, but never bruised. Also something of note, I visited grandparents when the scab was still sealing. My grandma had recently gotten out of the hospital with a MRSA infection.
doctor
Answered by Dr. Robert Galamaga (14 minutes later)
Brief Answer:
Considerations

Detailed Answer:
it could certainly be a superficial bacterial infection but assuming that your immune system is in good working order it should be able to get this under control relatively quickly. I doubt MRSA.

it may be just inflammatory collection of fluid. Our bodies generate fluid during inflammatory responses.

Sincerely,

Dr. Galamaga
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. Chakravarthy Mazumdar
doctor
Answered by
Dr.
Dr. Robert Galamaga

Oncologist

Practicing since :2002

Answered : 2635 Questions

premium_optimized

The User accepted the expert's answer

Share on

Get personalised answers from verified doctor in minutes across 80+ specialties

159 Doctors Online

By proceeding, I accept the Terms and Conditions

HCM Blog Instant Access to Doctors
HCM Blog Questions Answered
HCM Blog Satisfaction
What Causes Blister Over A Healed Injury?

Brief Answer: Considerations Detailed Answer: thanks for sending the question. I took a look at the picture that you sent. It does look quite inflamed but should gradually heal on its own. You might try to soak your name in some warm water for 15 to 20 minutes a couple of times per day for the next few days. This might help with the swelling. I would also watch the amount of redness. If you see the redness expandinggradually you might need to see your doctor talk about antibiotics. In the meantime I would apply a generic topical antibiotic pointed to the area. Try not to squeeze or press on the area and your immune system should take care of the rest. Sincerely, Dr. Galamaga