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It’s well known the challenge of differential diagnosis between Obssesive compulsive disorder and autism since their symptoms (intrusive, recurrent thoughts and repetitive behaviours) often overlap.
We report a case of a 14 years old boy diagnosed of ASD who was hospitalized for the first time due to difficult management of repetitive behaviours that made him incapable of doing basic activities without help. To interrupt them led to anxiety, aggressive responses and to insistence on sameness behaviours. Only with this information and with the literature research we made, anyone could tell the problem was probably an ASD symptom. However, during his evolution it was difficult to know whether this behaviour was due to ASD or OCD: after adjusting the medication, and when he started trusting his therapists, he told us about a theory he believed so he could explain the uncomfortable ideas that crossed his mind more than often, so he used those behaviours as an anxiety-reduction technique. This new situation was the fuel to make the present review.
To report a case.
The results are included in the “conclusions” section.
Although there is an ongoing debate concerning the nature of the symptoms in ASD versus those observed in OCD, there are commonly used criteria to differentiate them according to the articles we reviewed:
No significant relationships.
Over the last 25 years, radiowave detection of neutrino-generated signals, using cold polar ice as the neutrino target, has emerged as perhaps the most promising technique for detection of extragalactic ultra-high energy neutrinos (corresponding to neutrino energies in excess of 0.01 Joules, or 1017 electron volts). During the summer of 2021 and in tandem with the initial deployment of the Radio Neutrino Observatory in Greenland (RNO-G), we conducted radioglaciological measurements at Summit Station, Greenland to refine our understanding of the ice target. We report the result of one such measurement, the radio-frequency electric field attenuation length $L_\alpha$
. We find an approximately linear dependence of $L_\alpha$
on frequency with the best fit of the average field attenuation for the upper 1500 m of ice: $\langle L_\alpha \rangle = ( ( 1154 \pm 121) - ( 0.81 \pm 0.14) \, ( \nu /{\rm MHz}) ) \,{\rm m}$
for frequencies ν ∈ [145 − 350] MHz.
We present 63 new multi-site radial velocity (RV) measurements of the K1III giant HD 76920, which was recently reported to host the most eccentric planet known to orbit an evolved star. We focused our observational efforts on the time around the predicted periastron passage and achieved near-continuous phase coverage of the corresponding RV peak. By combining our RV measurements from four different instruments with previously published ones, we confirm the highly eccentric nature of the system and find an even higher eccentricity of 
$e=0.8782 \pm 0.0025$
, an orbital period of 
$415.891^{+0.043}_{-0.039}\,\textrm{d}$
, and a minimum mass of 
$3.13^{+0.41}_{-0.43}\,\textrm{M}_{\textrm{J}}$
for the planet. The uncertainties in the orbital elements are greatly reduced, especially for the period and eccentricity. We also performed a detailed spectroscopic analysis to derive atmospheric stellar parameters, and thus the fundamental stellar parameters (
$M_*, R_*, L_*$
), taking into account the parallax from Gaia DR2, and independently determined the stellar mass and radius using asteroseismology. Intriguingly, at periastron, the planet comes to within 2.4 stellar radii of its host star’s surface. However, we find that the planet is not currently experiencing any significant orbital decay and will not be engulfed by the stellar envelope for at least another 50–80 Myr. Finally, while we calculate a relatively high transit probability of 16%, we did not detect a transit in the TESS photometry.
