Soreness and achiness in the muscles that can range from mild to severe.

Self-care options include rest, ice, compression and elevation. Pain relief medicines available without a prescription, such as acetaminophen (Tylenol) and ibuprofen (Advil, Motrin IB, others), can help, too.

See a health care professional immediately if:

• Trouble breathing or dizziness.
• Extreme muscle weakness.
• High fever and stiff neck.

Make an appointment to see a health care professional if:

• Accompanied by a tick bite or rash.
• Worsens with exercise and resolves with rest, especially in the calves.
• Redness and swelling.
• Follows a change in medicine or dosage.