I read somewhere (it may have been medifocus) that a continual dry cough is an expected complication of Sjs due to a dry throat. Also, it said that we should never clear our throats. The example given was, when you are getting ready to speak do not clear your throat as it will eventually cause damage to your voice box. Instead of clearing your throat, you should hum.
Since, reading that I've noticed when I do accidently clear my throat, it really hurts.
I don't have a dry cough luckily. Though, one night I was calling the cat to come home (hollering is more like it) and it hurt my throat. I ended up coughing through most of the night.
Let us know if your GP has an answer.
Sjogren's dx 2011, Fibro, Osteoarthritis, Esophagitis, Depression, Anxiety, SFN, OAB, Asthma, Obstructive Breathing
Gabapentin, D3, Omega 3, B12 , Nexium, Prozac, Wellbutrin, Trazodone, Restasis, Evoxac, Meloxicam, Nuvigil, Plaquenil, VESIcare, Dulera, Montelukast, Spiriva