Bleeding risk and clotting risk have to be weighed together.

Why this comes up so often

Atrial fibrillation, prior stroke, heart stents, venous clots, and vascular disease are treated with medicines that reduce clotting. The same older adults are more likely to fall and more likely to have brain atrophy. The result is a frequent, difficult overlap: the drug that protects against ischemic stroke can worsen a subdural bleed.

Types of medicines people mean by “blood thinner”

• Antiplatelets such as aspirin and clopidogrel (Plavix).
• Warfarin (Coumadin), monitored with an INR.
• Direct oral anticoagulants (DOACs) such as apixaban (Eliquis), rivaroxaban (Xarelto), dabigatran (Pradaxa), and edoxaban.
• Injectable anticoagulants such as heparin or enoxaparin in hospital settings.

Bring a complete list, including medicines taken only a few times a week and any recent changes.

Do not stop them on your own

What teams may do in hospital

In an acute bleed, clinicians may reverse or hold anticoagulation, give vitamin K, use specific reversal agents when available, give platelets or other products, and treat the hematoma itself. Those are time-sensitive, monitored decisions. They are not outpatient experiments.

Restarting after treatment

After drainage or MMA embolization, the question becomes when—and whether—to restart. The answer depends on why the drug was prescribed, how the collection behaves on follow-up scans, and competing risks. Ask who owns that decision (neurosurgery, neurology, cardiology, or a coordinated plan) and when the next review is scheduled. Put it in writing before discharge. See recovery and follow-up.