Smoker's melanosis

42yr old male Pt c/o pain n sensitivity in upper right back tooth region since 1 month. Pt using cauliflower from 1 month for relieving pain. I asked to Pt for this lesion presenting in right buccal mucosa. Pt having no pain no burning sensation or no discomfort . Plz give dx n T/t?????no habit of smoking or tobacco or any other . Pt came to my clinic taking other problem bt I saw this lesion n asked about this.

32 year old female presented with the lesions raised & spread to both sides of the cheeks mucosa. Lesions are non-painfull in nature. What are your comments on the diagnosis?

A male patient came with brown patch on buccal mucosa and complains of pain and burning in that region from past 2- 3 months. Patient gives history of tobacco chewing from past 15 years. Identify the lesion and suggest the treatment plan.

A 44 year old white collar job male patient presented with oral pigmentation since one year. Can't consume any spicy food at all. Underwent routine oral candidiasis treatment like anti fungal mouth gel and itraconazole without any benefits. Patient was taking injectable gym steroids like testosterone, deca durabolin, Trenbolone available in the black market. Due to side effects and present oral symptoms stopped all steroids past one year, however he used steroids for almost a year. Non hypertensive, non diabetic, no obesity. Non-smoker, non-alcoholic, no other habits. Has h/o fungal /yeast infection on neck since one year, responding to topical anti fungals. Lesions reduced. CNS Conscious /oriented. No other comorbidities. Please help with diagnosis, or provisional or differential diagnosis/diagnoses. Plan of management. Thank you

A male 45 years old patient developed whitish irregular patch on anterior part of tongue which is mildly irritating almost unnoticeable since last 3 weeks.No history of addiction,diabetes,hypertension or any other disease. Please suggest diagnosis and management. Thanks.