My son been having a straight line of bumps on his back since I brought him these shirts from goodwill I had washed them and everything so there shouldn’t be any bed bugs but he does tell me they itch a lot and are kind of painful… what is it? 🙁

Hair follicles can become inflamed due to sweat, friction, or bacteria. On the back, this may appear in neat rows if follicles are irritated evenly.

Clues:

• Small red or skin-colored bumps

• May feel rough or tender

• Often linked to sweating or tight clothing

4. Shingles (Early Stages)

In rare cases, a straight line of bumps may follow a nerve pathway, which is characteristic of shingles. This condition usually affects one side of the body.

Clues:

• Tingling or pain before bumps appear

• Bumps limited to one side

• Progresses rather than fading quickly

⚠️ Medical attention is important if pain is present.

5. Heat Rash

Sweat trapped under the skin can cause small bumps, sometimes appearing in lines where sweat accumulates.

Clues:

• Occurs in hot or humid conditions

• Common in children and teens

• Improves when skin cools

6. Scratching or Pressure Marks

Repeated pressure from lying on textured surfaces or scratching during sleep can leave temporary raised lines.

Clues:

• Fade within hours

• Not painful

• No spreading

When Should You Worry?

You should consider seeing a healthcare professional if: