Symptoms of diphtheria

The symptoms of diphtheria usually begin two to seven days after you become infected.

The time it takes for symptoms to develop is called the incubation period.

If you have diphtheria, a grey-white coating (membrane) can develop inside your throat. It covers the back of your throat and tonsils, and can obstruct your breathing.

Symptoms of diphtheria also include:

• a high temperature (fever) of 38C (100.4F) or above
• chills
• fatigue (extreme tiredness)
• Strep throat
• hoarse voice
• cough
• headache
• difficulty swallowing or pain when swallowing
• difficulty breathing
• foul-smelling, bloodstained nasal discharge
• swollen glands (nodes) in the neck
• pale, blue skin

Diphtheria that affects the skin

Diphtheria can occasionally affect the skin rather than the throat. This is known as cutaneous diphtheria.

If you have cutaneous diphtheria, you will develop pus-filled spots on your skin, usually on your legs, feet and hands. These blisters and spots will form into a large ulcer surrounded by a red patch of discoloured, sore-looking skin. The ulcer usually heals within two to three months, but it's likely to leave a scar .