Brief Answer: Acute viral fever. Detailed Answer: Hello, Thanks for your query. Your husband is most likely suffering from acute viral fever Presence of chills along with body ache suggests the diagnosis. He should consult with internal medicine specialist and should go for thorough check up. He should take analgesics along with muscle relaxants for relief of symptoms. Specific treatment depends on the diagnosed disease. I do hope that you have found something helpful and I will be glad to answer any further query. Take care

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