Question
Which one of the following is a cause of scarring alopecia?
| A. |
Androgenic alopecia
|
| B. |
Alopecia areata
|
| C. |
Syphilis
|
| D. |
Radiotherapy
|
Show Answer
|
Correct Answer � D
Explanation
|
|
Scarring Alopecia:
-
- This occurs when hair follicles are permanently destroyed, leaving scar tissue behind.
- Causes include:
- Radiotherapy: Radiation permanently damages hair follicles.
- Infections (e.g., bacterial or fungal): Severe untreated cases can lead to scarring.
- Autoimmune diseases (e.g., lupus erythematosus).
Why Other Options Are Incorrect:
-
- Androgenic alopecia (A): Non-scarring hair loss caused by hormonal and genetic factors.
- Alopecia areata (B): Autoimmune, non-scarring condition leading to patchy hair loss.
- Syphilis (C): Causes “moth-eaten” hair loss but is reversible and non-scarring with treatment.
