|Pilonidal Dimple |
What is a pilonidal dimple?
A pilonidal dimple is an indentation in the skin on the lower back that is present at the time of birth. The dimple is usually small, shallow and can be found above the buttocks. Sometimes, a pilonidal dimple may be accompanied by increased hair growth in this area. Researchers do not know what causes pilonidal dimples, but generally they are harmless and do not need any medical treatment. However, a pilonidal dimple can reveal a more serious abnormality involving the spine and/or spinal cord, such as spina bifida. If the dimple is large, red, swollen, tender or accompanied by fluid, a doctor will likely perform a series of tests to rule out a more serious condition. Ultrasounds, MRI’s and physical examinations are all used to make a clear diagnosis.
Parents and caregivers should keep the dimple clean and dry. A pilonidal dimple can become infected and form a cyst, which would need medical treatment and possibly surgery to drain or remove the cyst.