Frozen shoulder (or, to use its technical term, adhesive capsulitis) leads to a stiffness that can limit your arm movement, according to Harvard Health.The condition creates a “dull, aching pain” that can become more intense over time, and which stings more when you lift your limb, the experts write. We aren’t quite sure what causes “frozen shoulder”, but it’s more common in people with diabetes, Parkinson’s disease, and thyroid disease – and it affects 2-5% of people. Harvard noted that frozen shoulder affects more women than men, a phenomenon physical therapist Dr Caryn McAllister said she’s seen in her 30 years of practice. But why might that be the case, and what should you do if you notice it?Oestrogen loss may affect the shoulder Some research “suggests a direct relationship between loss of hormones and prevalence of adhesive capsulitis,” Dr McAllister told HuffPost UK.