Index finger numbness progressing to needles and pins on palm

[Mossberry]

Go to a chiropractor or physical therapist. You may find it is another joint, or even you neck causing the issue. LOL

Hi!
I already seen similar complains is cyclists.
The most common causes:
1. Median nerve compression(neuropathy) in the wrist - too much weight on handlebars, riding posture too low , etc
2. Cervical root neuropathy from cervical disc degeneration, foraminal exostosis or other similar problems.
This case is more serious than simple median nerve neuropathy , but more rare and seen in persons > 55-65 years.
You had better see a healthcare specialist.

PS. When You feel numbness and weakness in 4-th and 5-th fingers , the ulnar nerve compression may be a cause in your wrist from bad riding posture or too hard handlebars.

 

[Mike TowpathTraveler]

I did my poor man's version of a bicycle fitting......by taking down measurements of my saddle nose-to-stem, as well as saddle angle and seat post length. Each measurement was logged down followed by a short ride to see what felt best. It took a while to get where I felt comfortable on long rides. But there was more to do.....

Such as fitting my handlebars with Cane Creek Ergo bar ends. These little rubber bar ends allow your hands the use of multiple positions on your bike ride. Speaking only for myself, the CC bar ends are a game changer. Not so much are the more well known Ergon bar ends. They do not allow the multiple hand positions at the end of the handlebar as the Cane Creeks do.

Saddle height and angle are so important for ride comfort and the most minimal of adjustments make the world of difference on how much weight is borne on your hands.

My bicycle fit was considered complete when I scrapped the original handlebar on the Haibike and I went with a Spank Spoon with a 60mm rise. From that point on, that 60mm rise gave a comfortable ride in the saddle, more feeling almost Recumbent-like.

The thing is, what works for me, may not work for anyone else here; such is trying to find that perfect fitment on your own bike....

 

[ebikemom]

I was having similar problems due to a different activity (playing an instrument). My problem was ulnar nerve entrapment/compression. I went to the doctor about it, and brought along my instrument. She said that the problem was positional, and that I needed to avoid being in that position. I would assume that the same goes with you and cycling. You need, somehow, to find a position that doesn't impede on those particular nerves. I was able to find a solution for my musical instrument by getting it modified by an instrument maker. The price of modifications was well worth the elimination of physical problems. I hope you can find a solution!

 

[M1ts0s]

M1ts0s, which cube bike do you have?

I have the Cube Touring Hybrid One 400 2018 step through

 

[Handlebars]

I have the Cube Touring Hybrid One 400 2018 step through

To sum up, the advice to see an MD and possibly even further to a specialist has to be considered foolish to neglect (MD, not chiro - maybe referral to nerve specialist).
After checking review of your bike I see things that could be done which did relieve my tingling nerve problem.
First, I have to say that for an analog bike I severely disliked the idea of not being in forward position riding posture. I hate not having good leg extension or power.
However, for the ebike purchase I decided to trade that for ability to put feet down flat, so I got the "City" model with lower min. seat height, and if it wasn't nice for pedalling, then I would use throttle only. Leg extension position is very good, made it just barely, with seat position to the most rearward I can make it, seat angle definitely not tilted forward at all, and sitting well back.

spark bikes city - Google Search

:

This bike has the quick release lever for handlebar positioning, which is beautiful for finding the sweet spot of height, forward/back and angle. Something like this https://www.amazon.ca/Promax-Ahead-...ocphy=1002416&hvtargid=pla-590520783730&psc=1

Along with taping the grips with thick insulating foam, I pulled the curving style bars upwards to be higher, and back toward me to the max, and rolled the bars so that the grips are pointing somewhat downward.
I've never had a better-handling bike position, and along with relaxing my grip, it did the trick for me.
Seeing the doctor is important, but unfortunately a doctor is likely to say "if it happens when you do that, don't do that".
So maybe you could replace those bars and that forward bit your bike has, with bars that are more of a slight chopper style and replace the forward bit to bring them back toward you and up, lower your seat height, and pad the grips and relax your grip.

 

[Handlebars]

I have the Cube Touring Hybrid One 400 2018 step through

Are your elbows held out straight or slightly bent/relaxed?