My 5 year old daughter has these patches of missing hair on her scalp. what could be the cause of that ?

3 things: 1 fungal infection (ringworm) 2 autoimmune (alopecia areata) 3 hair getting pulled out by child or too tight braiding see your md for a diagnosis and treatment.

Many possibilities. : Kids can loose patches of hair through scalp infections with bacteria or fungus, from pulling it out ( twirling & eating), & other dermatological issues.A visit to the kids pcp can start the process of finding out.

See a dermatologist: Alopecia areata is the most likely cause. Fungus is possible. Sometimes it is lupus, psychiatric, others. See a skin specialist soon.