Insufficient information to offer an opinion. There is speed, bite vs. ache, so many symptoms to correlate. Typically a history is made that produces a bigger picture. That history is overlapped into a story and symptoms. Physical issues, peripheral Ph., hair mineral and metal analysis and such.

Then when challenge tests are made at low or nominal levels, confirmations can be obtained. Basically most of the parasites are flat worms, 2 layer worms, or 3 layer worms. Flat worms plug the liver like flukes, or drain nutrients from the GI in the case of tape worms. Slower white Ascarids, ache, and typically use the ENT for birthing or multiplications. Red worms bite or itch.

These general words do not describe the shades of the subject we are discussing. Itch to the point of ripping one's skin by scratching, can be a sign of strongyloides. Also sand or snow in the bed can be a sign of strongyloides. The subject can get quite deep, not to say an itch cannot be another species, but "extreme itch" can generally be associated with a red species, like strongyloides, where there is a microfilarial stage, that causes "itch".

See, it can be simple or complex on how deep you go into the subject.

Then there is the overlay of multiple infections, where the symptoms become muddled with the complexity of multiple parasitic infections. I had over a dozen species, each one with their stages. The picture was so complex, it was near impossible to beat the infection down. But eventually learning logic and process, a path forward evolved.

Flatworms must be removed first, they interfere with liver, enzymes, and immune system function, possibly to the highest degree. Usually symptom-less or with no visual indication until challenged, Flukes, Tapeworms, and blood worms react to medications readily, and start to shed parts of stages, observable in the stool for identification. Small white triangles, or pea's in the stool, tomato skins, or Tapeworm segments rectangular appear. Whole flukes often times can be visually observed in the stool, when challenged.

White 2 layer worms cause sickness, gut ache, typically ENT eyes nose throat, or lung symptoms. Usually the second in a sequence towards curing infections, White worms rob the body of essential substances, loss of minerals and metals can be observed. In certain infections skin release, or toxic overload of nerves occur. Ascaris, Ascarids, Hook worms, or Toxocara worms can make one quite ill, headaches, gasping for air.

Red worms are nitric acid, burn through tissue at the mouth, seal tissue at the anus, and can be very small to very large. Red worms can be subtle until dosed. The damage they cause can be great over long periods of time. Symptoms of reds vary from itch to inability to walk, stroke, and everything in-between. Red worms can only be cured when there are no flat worms or white worms present.

There are millions of parasite species, but only a dozen or so meds.
Few find results in testing, as the variables are too great.
Infrequently there are no reactions to meds, then one considers Prehistorics which react to organic oils.

So scanning the meds, provides a general picture of infection types present.

If Praziquantel, Albendazole, Vitamin D3, and Calcium help, this is 85% of the time a flatworm infection.

If Oxibendazole, Mebendazole, or DEC low dose cause a reaction or calming for a short period, this is typically a white worm infection.

If Pyrantel low dose cause a reaction or calming, this is a GI infection.

If Invermectin or Fenbendazole cause a reaction or calming, this is a Red worm infection.

Then once an idea of how complex the infection is, higher levels of meds, formulas, and combinations are used to isolate and partition the infections, so that a sequence may be used to clear and cure infections.

Seldom is there a single species. These infections seldom rise to the level where one is aware that there is even an infection.

With a few parasites, there are usually a few symptoms, indicating an infection is ongoing.

Rapid aging, or large body dysfunction usually indicates a very complicated infection, requiring intervention. Usually there are more symptoms than

Skin infections are possible, given hook worm species, or Toxocara species. These typically are not known to be more internal, diaphragm, or groin located. Systemic infections can cover large areas of the body. Having a shoulder issue does not diagnose one species, since so many species can occur there. Many complain of larger body symptom area issues, when species like Ascaris, Toxocara, Strongyles, species are involved. Only one of these more serious species can cause a lot of serious commotion in the body.

Some Red worm infections cause bone/joint, or abdominal worm replication with hard stomach symptoms.

Migration often occurs with tougher species Ascaris, Certain Reds, or longer term Toxocara species.

Most parasites are influenced by common meds, but a few, like Toxocara, do not remit, with most formulas and treatment schedules. Special meds are often required.

So it is difficult to identify the dominant infection from your limited presentation on the subject. There are not enough check boxes identified that point to a specific infection, based on the limited data provided.

Certainly it is reasonable to suspect a complicated infection of more than one species based only on peas, paper cuts, groin to neck pains, but that level of detail is not enough to picture the situation.

Try rotating your head from side to side, shoulder to shoulder, slowly. Do you hear snapping, or captain crunch sound in your ears, when your head is rotated? Red worms leave cellulose filaments behind, that snap when they break. Aches, Pains, and Joint issues are associated with Red worm infections.

Try a simple dose of over the counter PinX Broad spectrum it could point to a species that uses the GI for one of its stages.

A dose of Ivermectin that causes some relief, could help point to a red worm infection.

A few doses of Mebendazole could see a reaction of Toxocara species.

But keep in mind, treatment is typically a long and slow process, with a lot of gray clouds, until a photograph, or series of reactions to a series of meds, causes that picture to come into focus.

It is only through history, symptoms, reactions to meds, photographs of stages, and other clues, can you picture the infection, and then seek to resolve and cure it.

Once you have a clearer idea of what you are dealing with, tests may help confirm the identification, this happens occasionally.

With a clearer picture of the species, and confirmation of med reactions, can one justify a course or schedule of dosing aimed at clearing the infection.