To relieve your allergic cough and nasal congestion, you can take an over-the-counter oral antihistamine like cetirizine or loratadine, which helps reduce allergy symptoms. For the nasal block, a saline nasal spray is a safe, drug-free option to help clear your nose. Alternatively, a decongestant spray like oxymetazoline can provide quick relief, but please limit its use to a maximum of 3 to 5 days to avoid worsening congestion. If you have a dry cough, a cough suppressant like dextromethorphan can help. Stay well-hydrated, and please consult a doctor if your symptoms persist, worsen, or if you develop a fever.

Your symptoms suggest a mild upper respiratory tract infection or allergic rhinitis (hay fever) triggered by sudden temperature changes, such as cooling down after sweating or bathing. Sneezing that worsens with cold air or temperature change is common in people with nasal allergies or sensitive nasal passages. Antihistamines such as cetirizine, levocetirizine, loratadine, or fexofenadine are commonly used to reduce sneezing, a runny nose, and other symptoms of allergy. If you also have nasal blockage, steam inhalation and saline nasal drops may help clear the nose naturally. Drinking warm fluids and staying well hydrated can also help relieve cold symptoms. Try to avoid sudden exposure to cold air after sweating, dry yourself properly after a bath, and keep your body warm. Dust, smoke, and strong fragrances may also worsen symptoms and should be avoided if possible. Most mild viral colds improve within a few days. However, if you develop a fever, thick coloured mucus, breathing difficulty, severe headache, or your symptoms last more than 1 to 2 weeks, you should consult a doctor for proper evaluation and treatment.

Frequent 'colds' and a runny nose are often actually allergic rhinitis (allergies) rather than repeated viral infections. For immediate relief, you can try an over-the-counter non-drowsy antihistamine (like Loratadine or Cetirizine) and a saline nasal spray to clear congestion. However, because this is a frequent issue, I highly recommend consulting a doctor. They can properly diagnose if allergies are the cause and may prescribe a daily steroid nasal spray (like Fluticasone) for long-term prevention. Avoid using over-the-counter decongestant nasal sprays for more than 3 to 5 days, as they can worsen your congestion.

Yes, your symptoms strongly suggest an allergic reaction, such as allergic rhinoconjunctivitis, which can sometimes trigger mild asthma-like breathing difficulties. This is very common and highly manageable, so please do not worry. To treat eye itching and sneezing, over-the-counter oral antihistamines like cetirizine or loratadine, and antihistamine eye drops like olopatadine, can be very effective. For the breathing difficulties, a doctor might prescribe an inhaled bronchodilator like salbutamol. Because breathing issues are involved, it is important to consult a healthcare provider for a proper evaluation and to ensure you get the right inhaler prescription. Rest assured, this is likely easily treatable.