Scab
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Scab on skin
Scab formed
Blistered scabbed over after a week
Scrape
Blisters formed scabs after 1 week
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Content updated on May 23, 2022
Description
A scab is a rough, dry protective crust that forms over a wound during healing. During the healing process, the tissue under the scab grows back and pushes out the scan to allow new skin to grow.
When to See a Doctor
Seek professional care if you experience any of the following symptoms
Numbness / sensory disorder
Numbness of the body
Systemic rash
Fever
Possible Causes
- Keloids (including piercing keloids)
Overgrown masses of scar tissue after trauma to the skin. Keloids occur more commonly on the earlobes, chest and back.
- Shingles
This disease is caused by the Varicella (or chickenpox) virus reactivating. It can be triggered by stress, aging, or a weakened immune system.
- Mucous membrane pemphigoid
A skin disease which is autoimmune in nature (caused by the body's immune system attacking its own cells).
- Mycobacterial infections (excluding TB)
- Autosensitization dermatitis
- Impetigo
- Pellagra
- Varicella
- Pemphigus
Related Serious Diseases
- Kawasaki disease
A disease caused by the body's immune system attacking the blood vessels. As such, Kawasaki disease requires hospitalization for treatment and ultrasound scans. Regular follow-up scans are also important to reduce the risk of future heart attacks.
Questions your doctor may ask about this symptom
Your doctor may ask these questions to check for this symptom
Do you have a scab?
Other Related Symptoms
Similar symptoms or complaints
Symptoms from the same body system / part
Symptoms treated by the same specialty
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Developed by doctors.
Ubie is supervised by 50+ medical experts worldwide
Seiji Kanazawa, MD, PHD
Obstetrics and gynecology (OBGYN)
National Center for Child Health and Development, Japan