Dr. Hanif warmly welcomes you! Thanks for consulting at my virtual clinic. I have carefully worked through your case, and can well realize your health worries. Being your physician, I want to assure, I will take care all of your medical concerns. No it is not due to medicines. Even Singulair does not cause this issue. Your age is 70 and at this age hair and skin issues start and very common is that. I have researched on the reason amongst 60+ age group of a large number of my patients for years and the reason was Toast and Tea syndrome. It refers to the poor dietary habits in this age group. People don t take care of the diet they have. I suggest you to please improve your diet and keep proteins (skimmed milk, eggs, fish) in your diet in handsome amount. Add green leafy vegetables and salads too. Plenty of water and a good physical activity is a must. I want to add a supplement specially for your needs. Capsule perfectil for skin hair and nails, once daily. It will definitely help you get better hair very soon. Hope I answered all of your questions. Please don t forget to add your precious positive feedback to help me able to assist you better in future too. Have a wonderful time ahead. Keep in touch for a follow-up too. Regards! DR. MUHAMMAD HANIF USA