What is this?

42 year female presented with swelling over 2nd right toe painful swelling

40 F. Solitary painful nodular swelling left little finger

16/M pedunculated swelling near toe .bleeds on touch

89 y/o woman scratched by her dog 3 weeks ago. Completed abx but still has a tender, raised nodule with surrounding erythema. No pruritis, growth or discharge. No systemic s/s of disseminated infection or neurologic s/s.

70 male irregular nodular lesions over buccal mucosa