The symptoms as mentioned in your post suggest that you might be having Allergic reactions to certain allergens.
1. Antihistamine preparations like Allegra
can be taken for symptomatic relief.
preparations, which is used as a maintenance therapy to relieve symptoms of seasonal allergies.
3. Nasal decongestants & intranasal corticosteroids
can also be used.
4. Maintain adequate hydration & take a healthy balance diet.
5. Also make sure that you are well protected from cold, dust & other allergens
Despite these measures, if your friend is having the symptoms, then it will be better to consult an ENT specialist
to rule out any systemic cause.
Investigation such as complete blood count
will be helpful.
Wishing a Good Health.
Thanks & take care.