Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Go to an emergency department if an erect penis is suddenly bent and you notice:
These signs may indicate a penile fracture or injury to the urine channel.
They are different from the gradual changes typical of Van Buren's disease.
Seek prompt advice if treatment causes marked swelling, worsening pain, extensive bruising, new erection difficulty, or concern about injury.
Arrange a routine medical appointment if you notice a new penile curve, a firm lump, painful erections, shortening, narrowing, or a change in erection quality.
An earlier assessment is especially helpful if the shape is continuing to change or sex has become difficult.
Seek support through routine care if the condition is causing persistent anxiety, low mood, relationship strain, or avoidance of intimacy.
Emotional effects are a valid reason to ask for help.
Every sign above is quoted from the sofidex article on Van buren's disease. If you are not sure, err upward — it is always reasonable to be checked.