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Your daughter is suffering from Amenorrhea(not having periods since six months). The most common cause is
pregnancy but if she is not sexually active it can occur due to stress, low body weight/obesity, thyroid issues(
hypothyroidism), poly-cystic ovarian syndrome, hormonal issues.
You are suggested to get your daughter see a gynae, get physically examined & treated. Her treatment will depend upon the pathology detected.
Give her home made nutritious food rich in protein , iron & calcium. Since she has a history of IBS, give her high fiber diet & let her take plenty of water. She can take antacids & PPI's , one sos when needed for relieve.
For Eczema she can apply
Hydrocortisone cream in the affected area after a bath. She can take antihistamines, Levocetrizine, one sos when needed for relieve. She can see a
dermatologist.
Hope I have answered your question. Take care.
Regards,
Dr Nupur K