<s>[INST] hello Sir, two year back, i used a lotion (a hair straightner liquid) on my hair. i applied it on my hair as well as scalp so that my hair would be straight. my hair got straight for some time and again became curly. My actual question is that from last year my hair falls very much and i feel some kind of pain on my scalp, it feels like someone has put red pepper on my scalp. can u please help me out. the pain is sometimes unbearable. [/INST] Hi,From your history and description, it is possible that the lotion may have affected your scalp and hair roots and damaged them. Weak hair starts falling over a period of time and the new hair will take time to grow, depending on its cycle. Also, the new hair needs to be healthy as well.The lotion may have been too harsh or also may not have suited your skin. Always test any new products on a small patch of skin and observe for 24 hours, before using.Hair fall could be due to other underlying factors like stress, work, poor diet, hair styling products, dandruff, change in water, pollution, etc., commonly.Also, you need to check for other causes like thyroid problems, low iron/hemoglobin, any illness like fever, typhoid, and any long-term medication. Any genetic hair loss, or balding in the family could make you more prone to hair fall and early greying of hair.As for the pain and burning sensation, it may be due to an allergic/irritant reaction of your hair and skin to the lotion. There may have been boils, blisters, etc.Other common causes maybe dandruff or greasy flaky scalp, scalp infections. Hair fall and new hair growth can cause a persistent painful feeling.In females, there may be association of scalp pain with menstrual cycles. To confirm the reason, examination by a dermatologist is necessary for further treatment. You can check with a dermatologist regarding any tests also required to check for these causes.As for hair fall, I would advise you to start on a hair supplement capsule like Keraglo, Hairbless or Follihair daily for 2 to 3 months to see improvement. Any treatment needs to be taken for a few months regularly to see good results. Be sure to take a nutritious diet and adequate rest, avoid stress. Avoid harsh chemicals.Treatment for pain as I mentioned, must be started after reviewing with doctor.You can go in for other cosmetic hair treatments as a later option after consulting dermatologist regarding the necessity.Hope I have answered your query. Let me know if I can assist you further.Regards,Dr. Dinah Levillard </s>