The point wheree upper esophagus and throat meet....

Treatment of cough and irritated throat:

  Treatment depends on the cause so treatment may include paracetamol 500 mg 3-4 times daily to treat pain, and you have to drink good amount of hot fluids, and you can use cetrizine 10 mg once daily for 5 days to treat allergy, and if there is bacterial infection, you can use azithromycin 500 mg once daily for 3-5 days.
And you may need to take omeprazole 20 mg twice daily for 10 days if there is gastric reflux.

Diagnosis of the cause of cough and irritated throat:

It depends on the clinical examination of your doctor and investigations as CBC to detect infection, PCR and chest x-ray to rule out COVID-19 infection

Causes of cough and irritated throat:

It may be due to:

• Viral infection which associated with low grade fever
• Gastric reflux which associated with burning sensation, epigastric pain
• Bacterial infection which associated with high grade fever
• COVID-19 infection which associated with cough, arthralgia, dyspnea