Mono (infectious mononucleosis)—often called “mono” or the “kissing disease”—is caused most commonly by the Epstein-Barr virus (EBV). It can lead to extreme fatigue, sore throat, swollen lymph nodes, and fever. Most people recover in 2–4 weeks, though tiredness can linger for months. Rest, hydration, and symptom relief are key, but urgent medical care may be needed if symptoms become severe.

Mono (Infectious Mononucleosis): Symptoms, Treatment & Recovery in DFW

What Is Mono (Infectious Mononucleosis)?

Mono is a viral illness that spreads easily through saliva, which is why it’s commonly associated with kissing, though it can also spread by sharing drinks, utensils, or personal items. It’s most common among teens and young adults.

Common symptoms include:

• Severe fatigue

• Fever

• Sore throat

• Swollen lymph nodes in the neck and armpits

• Enlarged tonsils or spleen

👉 Learn more at the CDC: About Epstein-Barr Virus and Mono.

How Contagious Is Mono and How Does It Spread?

The Epstein-Barr virus spreads mainly through saliva but can also be transmitted via coughing, sneezing, or sharing food and drinks.

• People can be contagious weeks before symptoms appear.

• Mono may remain contagious for months after recovery.

👉 The Mayo Clinic: Mononucleosis explains how mono spreads and when to avoid close contact.

How Long Does Mono Last? Symptoms Timeline and Recovery

• Acute symptoms (fever, sore throat, swollen glands) usually last 2–4 weeks.

• Fatigue may persist for several weeks or even months.

• Some patients develop an enlarged spleen, which requires avoiding sports or heavy lifting to prevent rupture.

Mono Diagnosis and Testing Options

Doctors diagnose mono using:

• Physical exam (checking for swollen lymph nodes or spleen)

• Blood tests, including the Monospot test or EBV antibody panel

If you think you might have mono, visit on elf our convenient locations for testing and same-day evaluation.

Mono Treatment: How to Manage Symptoms and Speed Up Recovery

There’s no specific cure for mono, but supportive care helps you recover faster:

• Get plenty of rest

• Stay hydrated

• Use acetaminophen or ibuprofen for fever and pain

• Gargle with salt water or use throat lozenges for sore throat relief

• Avoid strenuous activity and contact sports until cleared by a doctor

In rare cases, corticosteroids may be prescribed for severe swelling.

When to See a Doctor for Mono in DFW

Visit Urgent Care (7am–8pm) if you have:

• Severe sore throat or difficulty swallowing

• Persistent high fever

• Dehydration or weakness

• Symptoms not improving after two weeks

Visit the ER (24/7) if you have:

• Sudden abdominal pain (possible spleen rupture)

• Trouble breathing or swallowing

• Confusion, fainting, or severe weakness

Home Care and Prevention of Mono

• Don’t share drinks, utensils, or personal items

• Wash hands often

• Rest until fully recovered

• Slowly return to daily activities to avoid relapse

• Avoid close contact if you or someone you know has mono

👉 See the CDC: Prevention of Mono for practical tips.

Where to Get Care for Mono in DFW

If you’re experiencing sore throat, fatigue, or swollen glands and think it may be mono, don’t wait.

Get same-day care at Frisco, Fort Worth, Forney ER and urgent care).

Our urgent care is open daily from 7:00 a.m. to 8:00 p.m., and our ER is available 24/7 for severe concerns.

Walk In’s Welcome  or 👉 Schedule your Appointment Today