What symptom would best indicate that a sprained ankle requires medical attention?

The indication that a sprained ankle requires medical attention is primarily associated with significant swelling and an inability to bear weight. This combination of symptoms suggests a more severe injury, such as a possible fracture, complete ligament tear, or serious damage to the joint structures. When someone experiences significant swelling, it can indicate severe inflammation or injury to the soft tissues surrounding the ankle, which may require further evaluation and management by a healthcare professional.

Inability to bear weight is a critical safety sign; it suggests that the stability of the ankle has been compromised to the point where normal function cannot be performed. This symptom often warrants additional imaging studies, such as an X-ray, to rule out fractures and to assess the overall condition of the ankle. Seeking medical attention in these cases ensures proper diagnosis and treatment, which is essential for recovery and to prevent long-term complications.

In contrast, the other symptoms, such as minor swelling and tenderness, bruising alone, or improvement after rest, generally indicate less severe injuries that may often be managed with home care, such as RICE (rest, ice, compression, elevation) without the need for professional medical intervention.