Stretch marks on a skinny person: what they mean

Stretch marks, also called striae, are lines formed when deeper skin tissue changes faster than its supporting fibres can adapt. They may follow a growth spurt, muscle development, pregnancy, or a change in body shape that is not obvious on the scales. Family tendency and hormone shifts can also influence them. New marks may look pink, red, purple, or darker than nearby skin; older marks often become lighter and slightly indented. They are not caused by poor hygiene and do not mean that someone has gained excessive weight.

Take a clear photograph in consistent light if you want to track colour and texture, and avoid harsh scrubbing. Moisturiser can reduce dryness and itch but does not rebuild the altered fibres. If the marks bother you, a dermatologist can assess their age, colour, skin tone, and location before discussing options such as Microneedling, Fractional Laser Treatment, RF Microneedling, or Carboxytherapy. These procedures may make marks less noticeable, but results vary and a series of visits may be suggested. Do not use a strong steroid cream on the area without medical advice.

Arrange a review if many wide marks appear quickly without a clear growth or body-shape change, especially alongside easy bruising, muscle weakness, unusual facial rounding, or other new symptoms. Seek advice if the area is painful, persistently itchy, inflamed, or changing in a way that does not resemble typical stretch marks. A clinician can review medicines, including corticosteroids, and decide whether another skin condition needs consideration.

Ask: Do these lines look like stretch marks? Could a medicine or hormone change be contributing? Which option suits my skin tone and the marks’ age? What skin reactions should I expect, and how should I protect the area afterward?