Is a biopsy required to confirm the diagnosis of lichen planus?
No need of biopsy at this point
Thanks for writing to us at HealthcareMagic,
I have gone through your concerns.
Basically lichen planus is a clinical diagnosis and biopsy is usually not required.
If your doctors are sure about the diagnosis there is no need to go for a biopsy.
Moreover, steroids are the treatment of choice for lichen planus.
Also, Tacrolimus is an immunosuppressive drug and since you had a history of squamous cell carcinoma in the past you should not be using it for a long duration.
So I would recommend you to apply clobetasol propionate cream on the affected area twice daily 2 weeks and gradually taper it off.
If required you can use Tacrolimus later on.
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