Can a blood test detect scarlet fever?

Can a blood test detect scarlet fever?

A doctor can normally diagnose scarlet fever by looking at the signs and symptoms. A throat swab may help determine which bacteria caused the infection. Sometimes a blood test is also ordered.

Which is the best way to diagnose scarlet fever?

The diagnosis can be confirmed by taking a throat swab, which is then sent to a laboratory to identify the bacteria causing the infection. In some cases, a throat swab is not enough and a blood test may be needed. The usual treatment for scarlet fever is a 10-day course of antibiotics.

What kind of rash does scarlet fever cause?

The same bacteria can also cause impetigo. Scarlet fever is characterised by a rash, which usually accompanies a sore throat. Bacteria that cause the infection produce toxins (poisons), which cause the rash, a red and swollen tongue and flushed cheeks.

What happens when scarlet fever test comes back negative?

The results will show if bacteria from group A strep is causing your illness. If the result is positive, you’ll be prescribed antibiotics. If test results come back negative but your doctor still suspects you have scarlet fever, they will take a throat culture swab and send it to a lab for further analysis.

How does scarlet fever spread from person to person?

Antibiotics can also help protect others from getting sick. Bacteria called group A Streptococcus or group A strep cause scarlet fever. The bacteria sometimes make a poison (toxin), which causes a rash — the “scarlet” of scarlet fever. Group A strep live in the nose and throat and can easily spread to other people.

What is the chance of getting scarlet fever?

A person in close contact with another person infected with Group A streptococcal pharyngitis has a 35% chance of becoming infected. One in ten children who are infected with Group A streptococcal pharyngitis will develop scarlet fever.

What are the differential diagnoses for scarlet fever?

The differential diagnosis of scarlet fever with pharyngitis includes multiple viral pathogens that can cause acute pharyngitis with a viral exanthema. Clinicians need to use either a rapid antigen detection test (RADT) or throat culture to confirm scarlet fever with pharyngitis.

What is the treatment for scarlet fever?

Scarlet fever is treated with antibiotics, usually penicillin or azithromycin. In addition to antibiotic treatment, patients with scarlet fever and severe throat symptoms may try: Acetaminophen ( Tylenol ) or ibuprofen ( Advil , Motrin and others) to relieve pain and reduce fever.

What are the dangers of scarlet fever?

However, if left untreated, scarlet fever can lead to serious complications including rheumatic fever (an inflammatory disease that can affect the heart, joints, skin, and brain), kidney damage, ear infections, skin infections, pneumonia, and sepsis.