When researchers studied Norwegians who thought tick bites caused their chronic wellness problems, they recovered nary nonsubjective grounds linking nan symptoms to ticks.
The aforesaid study finds that wellness problems reported by participants were associated pinch small beingness activity and debased labour unit participation.
Many Norwegians propulsion ticks from their bodies each azygous summer. Roughly 2 per cent of those who are bitten are infected by a bacterium that leads to Lyme disease.
The illness tin commencement pinch a rash that yet spreads successful nan tegument pinch a ring-shaped pattern. In immoderate people, nan illness tin create into facial paralysis, meningitis aliases different complications.
Can create facial paralysis
"It is imaginable to get really sick from tick bites, but nary matter really severely you are affected, antibiotics are nan curative treatment. Most group request 2 weeks of treatment, while a fewer request up to 4 weeks," says Audun Olav Dahlberg.
Dahlberg is simply a elder advisor successful objective neurophysiology astatine Helse Møre og Romsdal HF, and is simply a master successful objective neurophysiology and neurology arsenic good arsenic a PhD investigation chap astatine NTNU, nan Norwegian University of Science and Technology.
As portion of his doctoral dissertation, he examined 470 Norwegians who themselves nexus chronic and semipermanent wellness problems to tick bites.
His investigation recovered nary grounds that nan chronic wellness problems reported by this group are linked to ongoing tick-borne infections.
The study besides shows that astir 0.12 per cent of adults successful Norway nexus chronic wellness problems to erstwhile tick bites.
Depression, sick time off and exhaustion
"This is nan first clip that we person quantified really galore group successful Norway themselves nexus chronic wellness problems to tick bites. This group suffers greatly, including from a constricted expertise to work, terrible fatigue and different wellness issues. Their symptoms person persisted for much than six months and they judge tick bites are nan cause. However, humor tests bespeak that progressive tick-borne infection cannot explicate these persistent symptoms," says Dahlberg.
To enlistee participants, nan researchers sent SMS messages to 270,000 group randomly drawn passim Norway, while GP offices, nan Norwegian National Advisory Unit connected Tick-borne Disease and nan Norwegian Lyme Borreliosis Disease Association besides helped pinch nan recruitment.
A full of 470 participants were examined and compared pinch power groups. All were complete 18 years old, and had had symptoms for much than six months.
More than 1 successful 3 person Lyme illness antibodies
Persistent symptoms were astir prevalent successful areas pinch a batch of ticks. In South-Western Norway, astir 0.15 per cent had problems attributed to tick bites, while nan percent successful Northern Norway was conscionable 0.03 per cent.
Among nan participants, 37.5 per cent had antibodies against nan bacterium that astir often causes Lyme disease. This shows that galore group person been successful interaction pinch nan bacterium and developed an immune response.
The participants besides had antibodies against Borrelia and different tick-borne microbes much often than nan power group. However, nan study recovered nary proven relation betwixt these antibodies and nan persistent symptoms.
The study shows that 23 per cent of nan participants had been diagnosed abroad. Dahlberg says this raises questions regarding nan diagnostic methods utilized successful immoderate countries, arsenic immoderate laboratories usage trial methods that are not successful statement pinch established master practice.
Important to get correct diagnosis
"We person thoroughly investigated whether ticks tin explicate nan suffering successful this group of participants. Since nan study recovered nary nexus betwixt persistent symptoms and ongoing infection, it tin lend to much targeted follow-up and treatment. Objective findings are important for making diagnoses, and semipermanent antibiotic curen beyond established believe is not recommended. An incorrect test tin lead to different aesculapian conditions being overlooked. That makes it important to person a thorough investigation based connected nonsubjective findings," says Dahlberg.
Lyme illness tin make you very ill. Dahlberg says this intends group should spot their expert if they create symptoms aft a tick wound truthful that correct curen tin beryllium assessed and perchance started.
Dahlberg emphasizes that nan study's findings use astatine nan group level.
"Of course, immoderate individuals whitethorn acquisition semipermanent ailments aft tick-borne infections, specified arsenic persistent nervus damage, immune responses, aliases a operation of biopsychosocial factors, specified arsenic psychological accent aliases societal circumstances. However, nan study shows nary indications astatine nan group level that a ample number of Norwegians acquisition semipermanent symptoms that tin beryllium attributed to persistent tick infections," Dahlberg said.
Source:
Journal reference:
Dahlberg, A.O., Aase, A., Reiso, H. et al. Prevalence and objective characteristics of Norwegians who study persistent wellness complaints attributed to tick bites aliases tick-borne diseases. BMC Infect Dis. DOI: 10.1186/s12879-025-12182-w
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