A number of conditions can cause rashes on the chest. The appearance of rash and other characteristics help in determining the cause of this rash.Allergies, reactions due to food insensitivities and intolerance can cause rash on the chest. Any allergy, inflammation or infection can cause rashes.Psoriasis, seborrheic dermatitis, acne are other conditions which may cause rash on the chest. A clinical examination will help in determining the cause. Seek the opinion of a dermatologist .I hope it helps.
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