Hello. Thanks for asking from HCM.
I can understand your concern. Complaint of headache with vomiting could be due to
:
Head injury - Head injury can cause it even after 3 weeks, if he is having chronic
subdural hematoma. But it is uncommon in 20-30 year age group and his CT scan is normal. But CT scan is not 100% sensitive, MRI brain is a better option. Other symptoms of chronic subdural are heaviness in head, forgetfulness, imbalance while walking.
If his symptoms are correlating with above,
consult doctor and ask about MRI brain to rule out it. Usually large hematoma needs surgical evacuation.
:
Migraine - Migraine is a type of
hemicranial headache (half of head), throbbing type, associated with nausea, vomiting,
photophobia (fear from light), usually occurs for few minute to hours and spontaneous relief.
If he is having migraine like symptoms, ask him to consult doctor. He will evaluate him and prescribe medicine like NSAIDS or Triptans. For vomiting, he might prescribe Domperidone-
Pantoprazole combination. Aak him to avoid dairy products, chocolate, citrus fruits like lemon/avacado/orange, stress, bright light.
: Mass lesion - It means some mass in brain causing pressure effects leading to headache, vomiting, blurring of vision, focal deficit like weakness of limbs.
It is usually detected by CT head but can be missed. MRI brain is better investigation to detect it.
If symptoms are correlating with above, consult doctor. After full evaluation, treatment will be decided.
You can reach upto some conclusion and consult doctor accordingly. Hope it will help you. Take care.