Capsulitis is a very common issue and can occur for a variety of reasons, such as: stiff big toe joints, bunions, stubbing your toe, dropped metatarsals, rheumatoid and psoriatic arthritis and for a whole host of other reasons.
The presence of pain in a knuckle can be really quite debilitating and, if you have developed capsulitis: it is usually quite inconvenient as it generally occurs when people are trying to get fitter, healthier, or training for an event.
The number of treatments available to people with capsulitis is vast but diagnosis is essentail. First, it is incredibly improtant to make sure that you do not have a plantar plate injury (toe joint sprain) as this will be progressive unless managed properly.
Seeing a health professional who can organise diagnostic imaging would be your best bet to make sure that you get an accurate diagnosis. This being said, it is possible to get accurately diagnosed with just clinical assessment, but you are relying on the health professional knowing how good they are at diagnosing this condition.
Capsulitis is inflammation of the toe knuckle (metatarsophalangeal joint) under the foot.