International Journal of Trichology International Journal of Trichology
 Print this page Email this page Small font sizeDefault font sizeIncrease font size
  Home | About IJT | Editorial board | Search | Ahead of print | Current Issue | Archives | Instructions | Online submission | Subscribe | Advertise | Contact us | Login   

 Table of Contents  
Year : 2022  |  Volume : 14  |  Issue : 2  |  Page : 73-74  

Clinical and dermoscopic image of hairs trapped in the acne scar: Is it ingrown or circle hairs?

Department of Skin and VD, Shree Krishna Hospital, Karamsad, Anand, Gujarat, India

Date of Submission21-Mar-2019
Date of Decision20-Jul-2020
Date of Acceptance20-Jul-2020
Date of Web Publication04-Apr-2022

Correspondence Address:
Pragya Ashok Nair
OPD 111, Shree Krishna Hospital, Karamsad, Anand - 388 325, Gujarat
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijt.ijt_31_19

Rights and Permissions

How to cite this article:
Nair PA, Pariath K, Patel D, Bhut A. Clinical and dermoscopic image of hairs trapped in the acne scar: Is it ingrown or circle hairs?. Int J Trichol 2022;14:73-4

How to cite this URL:
Nair PA, Pariath K, Patel D, Bhut A. Clinical and dermoscopic image of hairs trapped in the acne scar: Is it ingrown or circle hairs?. Int J Trichol [serial online] 2022 [cited 2022 Jul 4];14:73-4. Available from: https://www.ijtrichology.com/text.asp?2022/14/2/73/342545

A 35-year-old male presented with an asymptomatic hyperpigmented papulonodular lesion over the left cheek for 3 months. There was a history of acne before 6 months. He took some treatment and did not go for shaving of beard hairs for 1 month before the development of present lesion with the fear of getting trauma and bleeding of lesions. On examination, a single 3–4 mm nodule over the left cheek forming a track of acne scar with whorls of hairs trapped in it [Figure 1]a and [Figure 1]b. Dermoscopy with the FireflyPro DE 300 showed 10–15 whorls of hairs entrapped underneath the two acne scars joint by a normal skin [Figure 2]. Extracted hairs from the scar by a forceps [Figure 3] were rolled out, but recoiled.
Figure 1: (a) Single 3–4 mm nodule over left cheek forming a track of acne scar with whorls of hairs. (b) Whorls of hairs entangled in acne scar

Click here to view
Figure 2: Dermatoscopy showing 10–15 whorls of hairs entrapped underneath acne scars joint by a normal skin

Click here to view
Figure 3: Extracted recoiled hairs from the scar

Click here to view

Circle hairs (CHs) are characterized by asymptomatic presence of hairs with typical circular or spiraliform arrangement, not associated with follicular or inflammatory abnormalities.[1] When facial hair grows, it tends to bend back instead of continuing outward and upward. Once it bends back, the sharp edge of the facial hair simply pierces the skin and continues growing under it. CH has a small hair diameter that makes it difficult to penetrate stratum corneum and thus growing in a circular track with subcorneal location. It can be due to follicular ostia which are continuously open and hence the hair does not need to perforate the stratum corneum.

Ingrown hairs developing over the face can be due to dead skin cells, shaving too closely, pulling the skin, bacterial or fungal infection, chemicals that irritate skin, pore-clogging skin care products, dirt, makeup, and grease. The skin that lacks moisture is more prone to developing ingrown hairs because it can weaken the skin's natural healing and defense mechanism.[2] Anyone can get an ingrown hair. However, the problem is more common in people who have very curly or coarse hair. Curly hair is more likely to bend back and re-enter your skin, especially after it has been shaved or cut. The hair that grows back has a sharper edge, so it can more easily poke back through your skin and get trapped under the surface.

Declaration of patient consent

The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.

Financial support and sponsorship


Conflicts of interest

There are no conflicts of interest.

   References Top

Lacarrubba F, Misciali C, Gibilisco R, Micali G. Circle hairs: Clinical, trichoscopic and histopathologic findings. Int J Trichology 2013;5:211-3.  Back to cited text no. 1
Luo DQ, Liang YH, Li XQ, Zhao YK, Wang F, Sarkar R. Ingrowing hair: A case report. Medicine (Baltimore) 2016;95:e3660.  Back to cited text no. 2


  [Figure 1], [Figure 2], [Figure 3]


    Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
    Access Statistics
    Email Alert *
    Add to My List *
* Registration required (free)  

  In this article
    Article Figures

 Article Access Statistics
    PDF Downloaded5    
    Comments [Add]    

Recommend this journal