This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Law & Medicine, Identification, Autopsy & Burn, Subject name: Forensic Medicine
Finger pattern may be impaired permanently in case of 
Select and explain. 
A. Acanthosis nigricans, B. Leprosy, C. Scleroderma, D. Snow exposure
B: Leprosy
Answer: B: Leprosy 
Explanation: Ans. is 'b' i.e., Leprosy Conditions modifying finger prints* Finger prints may be modified in following situations.1) Temporary modification:# It may be due toi) Moderate ridge atrophy (+- loss of pattern) : Coeliac disease.ii) Incomplete ridge atrophy or alteration : Acanthosis nigricans, dermatitis, dry atrophic skin, scleroderma.iii) Distance between ridges change (no change in pattern): Rickets, acromegaly, infantile paralysis.iv) Modification by applying physical agents (by criminals): CO2, snow, corrosives, burns, eroding agents.2) Permanent modification:# It occurs in leprosy, radiation, electric injury, by skin grafting and by complete destruction of skin.