What could red itchy blotches on the skin be?

Not Medical Advice: The answer to what red, itchy blotches on the skin might be is highly dependent on what part of the body the blotches are appearing on, and will vary dependent on other factors including diet, travel history, exposure to various things and others.

Some of the conditions the blotches might be attributed to include allergic reaction, lice infestation, contact dermatitis, abscess, alopecia, blepharitis, or pustular psoriasis. Poison ivy, poison oak, or poison sumac exposure could also be a cause.

It could also be erythema multiforme, a common rash caused by strep throat, viral infections and reactions to medicines.

Another possible cause is hidradenitis suppurativa, which mostly affects sweat glands in the armpit and groin. In addition, narcotics abusers frequently suffer skin symptoms such as those described.

We recommend the afflicted person see a doctor for a definitive diagnosis and proper treatment of the symptoms.