PLEASE NOTE: This is by NO MEANS a clinical diagnosis. Any advice received ANYWHERE online should NEVER be taken as such.
ALWAYS consult a medical professional in your area.
Based on the information given it sounds like a Tarsal Bone Stress Fracture.
As you did not indicate location it's hard to rule out other probable causes. However the most common I see in patients involve the Navicular (which is a tarsal bone or foot bone). If you haven't already please consult your physician.
Navicular Stress Fracture
- A navicular stress fracture is one of the most common stress
fractures affecting athletes, especially those in explosive events
such as sprinting and jumping.
Navicular Stress Fracture Symptoms
Symptoms of a navicular stress fracture include
- Poorly localized ache with bruising in the midfoot area, which gets worse with exercise.
Pain may radiate along the inside arch of the foot and is minimized at rest only to return again as training resumes.
Tenderness may be felt when the thumb is pressed into the top of the
foot over the navicular bone, called the N spot.
Navicular Stress Fracture Explained
The navicular is one of the tarsal bones in the ankle. It sits on top
of the calcaneus or heel bone. A stress fracture of the navicular is
caused by over use or repetitive strain, usually from high impact
sports such as sprinting, hurdling and jumping.
Poor technique or training errors can also contribute to the
likelihood of sustaining a stress fracture of the foot.
The navicular bone gets pinched or impinged between the bones to the
front and back of it causing it to be compressed.
An X-ray may or may not show the appearance of a stress fracture therefore a bone scan or MRI is of more use.