The cause of<unk> <unk>  is thought to be chemical or thermally induced keratosis. The chemicals in tobacco may act as irritants in this condition. Chronic heat exposure is also responsible. Pipe smoking produces more heat on the palate than any other forms of smoking. Long-term drinking of very hot beverages can also cause a similar condition. The severity of the changes correlates with the frequency of the habit. The prevalence depends on a society's use of consuming hot beverages and of smoking in its various forms. A similar, but more pronounced palatal keratosis occurs with reverse smoking. This is where the lit end of the cigar or cigarette is held in the mouth, another form of smoking associated with high levels of heat in the mouth. This form of the condition is sometimes termed "reverse smoker's keratosis", and is a premalignant lesion. That is, the condition is associated with an increased risk of malignant transformation to oral squamous cell carcinoma (a type of oral cancer). Some sources do not distinguish between reverse smoker's keratosis and smoker's palate that is caused by heat. As such, these sources tend to state that<unk>  is a premalignant condition. Some reports show that there is an increased risk of tonsillar cancer, lung cancer and tumors of the posterior oral cavity in people who develop<unk> .
Stomatitis nicotina
Bradyphrenia
Tinea faciei
Tinea imbricata
Visceral larva migrans
Allochiria
Acheiria
Tinea capitis