Carpal tunnel & tendon pain

If you've woken up with numb hands, a thumb that 'catches' when you straighten it, an elbow that hurts to lift a kettle, or wrist pain that started without an injury — you're not clumsy and you're not getting old. Estrogen is one of the biggest regulators of tendon and connective-tissue health, and when it drops, the soft tissues around your joints get stiffer, more inflamed and more prone to compressing the nerves running through them.

Estrogen keeps connective tissue elastic and well-hydrated. When it drops, the same load you've handled for years starts to register as injury.

Estrogen withdrawal thickens tendon sheaths. Tendons and their sheaths are full of estrogen receptors. When estrogen falls, the sheath gets thicker and stickier — which is why trigger finger (a thumb or finger that catches or locks) and de Quervain's (pain at the base of the thumb) suddenly appear in people who never had hand problems. The thicker sheath compresses the tendon as it tries to glide.

Carpal tunnel is nerve compression, not 'overuse'. The median nerve runs through a tight tunnel at the wrist. In perimenopause, the soft tissues lining that tunnel swell, the nerve gets squeezed, and you get the classic pattern: numbness or tingling in the thumb, index and middle fingers, often worst at night, often making you shake your hand out to 'wake it up.' Pregnancy carpal tunnel has the same mechanism (fluid shifts + hormones); midlife carpal tunnel is the same biology, different chapter.

Frozen shoulder, tennis elbow and plantar fasciitis travel in the same pack. If you've developed one of these, the others get more likely. They share the connective-tissue mechanism. Studies find people in perimenopause have around 2–4× the frozen-shoulder rate reported for age-matched men. If you're being told 'unlucky, must be your golf swing,' ask whether your hormones are part of the picture.

Diabetes, thyroid disease and B12 mimic this. All three independently cause tendon thickening and nerve symptoms. Worth excluding with a basic blood panel before assuming it's purely hormonal, especially if symptoms are bilateral and severe.

Strength is protective; rest alone usually isn't. The instinct is to stop using the hand. For most midlife tendinopathies, gradual loading (controlled, progressive resistance) is what rebuilds the tendon. Total rest tends to delay recovery. The exception is acute inflammation in the first few days.

Most cases respond to a layered approach: address the hormonal floor, load the tendon properly, and use night splints + targeted injections for the acute phase.

Wear a wrist splint at night before anything else. A neutral wrist splint worn overnight is the single highest-leverage thing you can do for carpal tunnel. Most night-time numbness comes from sleeping with the wrist bent. Try a £10 splint from any pharmacy for 4 weeks before considering injections or surgery — many people recover entirely on the splint alone.

Ask about MHT — the connective-tissue case. Transdermal estradiol restores some of the estrogen signal that tendons need. Be clear-eyed about the strength of this one: the link between MHT and fewer or milder connective-tissue problems (carpal tunnel, frozen shoulder, trigger finger) comes from observational studies, which can't prove cause, and some older data pointed the other way. Worth raising as part of the conversation — especially if you have several connective-tissue symptoms at once — not a reason to start MHT on its own.

Eccentric loading for tennis/golfer's elbow. Slow, controlled eccentric exercises (lowering a light weight over 3–5 seconds, 3 sets of 15, daily) have the best evidence base of any non-surgical treatment for lateral or medial epicondylitis. A hand therapist or physio can teach the protocol. Expect 8–12 weeks to feel meaningful change. It's genuinely tedious. It also genuinely works.

Corticosteroid injection — useful but limited. A single steroid injection often resolves trigger finger or early de Quervain's. For carpal tunnel, an injection can buy 3–6 months and confirm the diagnosis. Repeated injections weaken the tendon, so two is usually the practical ceiling before discussing surgical release.

Surgical release works — don't let it be the last resort. Carpal tunnel release and trigger finger release are 15-minute outpatient procedures with very high success rates. People routinely defer them for years because they've been told to 'try everything else first.' If splints and an injection haven't worked at 3–6 months and the symptoms are interfering with sleep or work, ask for a referral. Recovery is days, not weeks.

Magnesium, omega-3, vitamin B6 — modest but real. B6 deficiency genuinely worsens carpal tunnel; supplementing 50 mg/day for 8 weeks helps some people (don't go higher — high-dose B6 can cause nerve damage). Magnesium glycinate and omega-3 have a small anti-inflammatory effect. None of these replace the splint or the hormonal conversation.

Audit your day for the smaller compressive loads. Heavy phone scrolling with the wrist bent, sleeping on a bent wrist, leaning on the elbow for long calls, a non-ergonomic keyboard angle — each is small alone, additive together. Spend a day noticing. The biggest single change for many people is a vertical mouse and a phone stand.