This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of skin, Subject name: Dental
A female patient presents with diffuse alopecia to you. She had suffered from typhoid fever 4 months back. Most probable diagnosis is- 
Select and explain. 
A. Androgenetic alopecia, B. Telogen effluvium, C. Anagen effluvium, D. Alopecia areata
B: Telogen effluvium
Answer: B: Telogen effluvium 
Explanation: telogen effluvium is the loss of telogen hairs that occurs 2-4 months after systemic stressfull episode. Other causes are nutritional deficiencies (iron deficiency anemia), febrile states like typhoid malaria,TB,HIV, stress from surgeries or injuries, starvation, crash diets, malignancies, renal and hepatic failure, hair dye application. normal telogen hairs on scalp- 13% telogen effluvium telogen hair %-20-25% androgenetic alopecia is patterned baldness not diffuse anagen effluvium anagen hairs are lost more hair loss. and seen after taking antimitotics and cytotoxic drugs and radiation therapy alopecia areata is patchy hair loss Harrison20th edition pg 1209