Cellulitis fever and chills: what to know

Cellulitis is an infection in deeper layers of skin. Redness, warmth, swelling, tenderness and fever can occur together as the immune system responds. Chills, shivering, marked weakness or feeling suddenly unwell raise concern that the infection is affecting more than the original skin area. This symptom pattern does not confirm a severe complication, but it should not be watched at home without clinical advice.

A break in the skin, an ulcer, an insect bite or an untreated Athlete's Foot problem can provide an entry point. People with Type 2 Diabetes may need especially careful assessment because foot and skin infections can worsen without obvious early changes.

Contact a healthcare professional promptly for an examination and treatment plan. Note when the fever or chills began, whether the red area is expanding, and any medicines or allergies. Keep the affected limb supported if swelling is present, drink fluids if you can, and avoid squeezing, piercing or applying irritating products to the skin. Take prescribed treatment exactly as directed and do not use leftover antibiotics.

Seek emergency care for confusion, faintness, trouble breathing, very rapid deterioration, severe pain out of proportion to the skin changes, cold or clammy skin, or difficulty staying awake. Urgent assessment is also needed when redness spreads quickly, a limb becomes difficult to move, or fever and chills continue or return during treatment. These features can occur with serious infection, including Sepsis.

Ask what may have allowed bacteria to enter, how the infection will be monitored, and what change should be expected after treatment starts. Ask whether a wound, Athlete's Foot, swelling or another condition needs separate care, and which symptoms mean you should return immediately.