I have just realised that some of the things like itchy feet and ...

I have just realised that some of the things like itchy feet and sometimes getting really irritable and angry which is totally not like me. Paranoid and having funny sensations in my back and chest. Always had vivid dreams. Now I think I know what it is. Singulair. It worked wonders for my asthma no more puffers. That’s why I keep taking it The worst thing is which i believe now must be this medication is when sometimes I run out of the stuff and not taken it for a few days. I gets strange pains in my chest and back. Feels like my lungs are being squeezed inside and mild chest pains near my heart. And weird pains in my lower back. Going to stop taking this stuff as worried about the long term problems. Thanks for people who have posted in this site