This kind of widespread rash needs to be examined by a medical doctor, such as a dermatologist.

However, for informational purposes, a rash with this appearance (numerous, widespread red bumps on the trunk) could potentially be related to various skin conditions, including but not limited to:

  • Severe Acne or Folliculitis: Inflammation of the hair follicles, which can be widespread.
  • Pityriasis Rosea: A common rash that starts with a “herald patch” and is followed by smaller lesions on the trunk and limbs.
  • A Drug Eruption or Allergic Reaction: A reaction to a new medication, food, or other substance.
  • Viral Exanthems: Rashes caused by a systemic viral infection.
  • Scabies: An intensely itchy rash caused by a mite infestation, though the lesions can be quite varied.

It is critical that you seek medical advice. A healthcare provider can properly examine the rash, determine the cause, and recommend the correct treatment plan. Do not attempt to self-diagnose or treat this condition.