My brother sweats and sneezes a lot. When he wakes up in the morning, he also has itchy eyes. What are these symptoms of?

Unfortunately, I couldn't say for sure what is causing these symptoms. If the problem is worse in the morning, it could be to do with the environment in which your brother is sleeping.

Some common allergy triggers in the bedroom include animal dander, mould spores and dust mites.

Other things that can contribute to allergy symptoms include cleaning products and laundry detergent. You can explore my allergic rhinitis hub for more information.

Your brother could give our Pollinosan Hayfever Tablets a try as these address multiple allergy symptoms. If the issue persists, though, it may be worth visiting a doctor just to get checked out.