Red rashes with itching after fever and medicines may be due to a drug reaction or a viral rash. This should not be ignored, as some reactions need prompt medical attention. Avoid taking any new medicines without medical advice. Consult a doctor immediately for proper evaluation and suitable management.

Yes, you can take either cetirizine or Allegra (fexofenadine) to help soothe the itching and reduce the redness. Both are antihistamines that can provide good relief. Please choose just one, as taking them together is not recommended. Make sure to follow the package instructions. If your rash spreads, does not improve after a few days, or if you start feeling unwell, please have a doctor examine it to ensure you get the right care.

It is very common for daily antihistamines like Allegra (fexofenadine) to cause dry nasal passages, which can lead to sinus irritation and a localized headache above your eye. Since your Covishield vaccine was a week ago, mild vaccine side effects would typically have resolved by now. The lack of relief from paracetamol and ibuprofen also points toward sinus pressure from dryness. Please try using a simple saline nasal spray to moisturize your nostrils and drink plenty of fluids. Since your headache is persistent, it is best to consult your doctor to rule out any other sinus issues or post-vaccine concerns.

It is very common for ongoing allergies themselves to cause inflammation and swelling inside your nose. Regarding your medications, Allegra (fexofenadine) helps reduce this swelling and is highly unlikely to cause it. However, certain nasal sprays, especially if used for too long or if they cause local irritation, can sometimes lead to dryness or a rebound swelling effect. Please be reassured that this is a manageable issue. I recommend discussing the specific nasal spray you are using with your doctor to see if adjusting your treatment can help bring you some comfort.

His severe leg itching could be caused by dry skin (xerosis), which is common in diabetes and can be worsened by infrequent bathing. Since Allegra is not providing relief, the itching may also stem from diabetic neuropathy (nerve irritation) or poor circulation in his lower legs. I gently recommend keeping his legs clean and applying a thick, fragrance-free moisturizing cream daily. Please consult his doctor to examine his legs and check his blood sugar levels to rule out any underlying infections or nerve issues, ensuring he stays comfortable.

Your morning sneezing and blocked nose are classic signs of allergic rhinitis. To help manage this, try avoiding very cold foods, dairy, and alcohol, which can sometimes trigger or worsen nasal congestion. For relief, you can use a daily non-drowsy oral antihistamine like cetirizine or loratadine to reduce sneezing. For the blocked nose, a corticosteroid nasal spray such as fluticasone is highly effective when used regularly. Saline nasal sprays are also a great, safe option to clear your nasal passages. If symptoms persist, please consult a healthcare professional for a personalized evaluation.