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Does my 1 year old have chicken Pox? - pictures of chicken pox more condition_symptoms

My son is almost one and I think he has chickenpox. .. But I'm not sure, hes got these little blisters on it is not everywhere, but there are few. But he has no fever or a cold or something. .. ?
I do not know much about chicken pox, but I saw the pictures and a few like him. Can chicken pox without fever or anything else that comes with it?