Apart from stopping the habit, no other treatment is indicated. Long term follow-up is usually carried out. Some recommend biopsy if the lesions persists more than 6 weeks after giving up<unk><unk>  use, or if the lesion undergoes a change in appearance (e.g. ulceration, thickening, color changes, especially to speckled white and red or entirely red). Surgical excision may be carried out if the lesion does not resolve.
Smokeless tobacco keratosis
Hydrocarbon keratosis
Arsenical keratosis
PUVA keratosis
Actinic keratosis
Reactional keratosis
Occupational acne
Seborrheic keratosis