These are hives (urticaria) with the typical slightly-raised red appearance, and are accompanied by itching. These are located on the buttocks. Hives can be generalized over the entire body or may be localized
Skin Rashes - Types, Treatment And Prevention – SkinKraft
Researchers Find Cause of Rare Immune Disease
Hives (urticaria) on the arm
Hives (Urticaria) Condition, Treatments and Pictures for Children
MedlinePlus Medical Encyclopedia: Hives (urticaria) on the back
Is Chronic Spontaneous Urticaria an Autoimmune Disease? - Sharecare
Medical Dermatology Skin Conditions We Treat
qph.cf2.quoracdn.net/main-qimg-7b7d87d0254cc21f0da
Hives (urticaria) on the back and buttocks: MedlinePlus Medical
Hives - Wikipedia
Pictures of childhood rashes: Red dots, bumps, and more
The Hives-Stress Connection
7 Answers About Angioedema