Swelling and inflammation of the gums after a viral fever can be a sign of gum irritation or infection. Using an antiseptic and anti-inflammatory mouthwash like Dresin Mouthwash & Gargle, which contains Benzydamine and Chlorhexidine, may help reduce inflammation and control infection.

• Rinse your mouth with the mouthwash as directed, avoiding contact with your eyes.
• Maintain good oral hygiene by brushing your teeth gently twice daily.
• Avoid eating, drinking, or brushing immediately after using the mouthwash to maximize its effect.
• Limit consumption of tea, coffee, and red wine to reduce staining from the mouthwash.
• If you notice worsening symptoms, severe pain, bleeding, or allergic reactions, seek prompt evaluation.

It is important to consult a dentist to assess your gum condition and receive appropriate treatment tailored to your situation. If symptoms worsen or you experience difficulty swallowing or breathing, seek emergency care immediately.To narrow down potential causes, we will need some more information.Please tell me your age and gender.