Sudden itching and redness spreading from the hands to the legs suggest an allergic reaction. Keep the skin cool, avoid scratching, and apply calamine or a mild moisturiser. See a doctor urgently if it keeps spreading, or if you have swelling of the lips/face or breathing difficulty.

Constant anal itching, especially after scabies and with an anal fissure, can be incredibly distressing. Since antihistamines like Atarax and Xyzal aren't helping, and lignocaine only provides temporary relief, the skin may be highly sensitized or experiencing post-scabies irritation. It is also possible a secondary fungal infection has developed from excess moisture. Please avoid scrubbing the area or using harsh soaps. I gently recommend seeing a doctor or dermatologist. They can evaluate if the fissure is healed and safely prescribe a targeted mild corticosteroid or antifungal cream to finally give you lasting relief.

Since levocetirizine (Xyzal) is only providing temporary relief, please know there are other effective options. Doctors often safely increase the dose of daily non-drowsy antihistamines up to four times the standard limit under close medical supervision. Alternatively, adding a different class of medication or discussing advanced options like biologic therapies with an allergist or dermatologist can help target the root cause.

Your slightly elevated eosinophil level of 8% often indicates an allergic reaction or skin sensitivity. Since the bumps fade when pressed, they could represent an allergic skin reaction or hives. Levocetirizine (Xyzal) is an antihistamine that should help soothe your overall body itching, though it might be less effective for the non-itchy bumps themselves. I gently recommend having a doctor or dermatologist physically examine them to ensure an accurate diagnosis.

While there is no instant permanent cure, they often resolve over time and can be successfully managed. Since you reacted to cetirizine and Relent, an allergist can help find safe alternative treatments, such as targeted biologic therapies. Regarding the COVID-19 vaccine, having eczema or psoriasis does not prevent you from getting it. However, because of your history of severe swelling to medications, it is highly recommended to consult your allergist first. They can safely evaluate you, and if cleared, you can receive the vaccine under medical supervision with an extended observation period for your safety.

Small itchy patches on the neck after sun exposure are often due to sun rash, heat rash, or irritation. Try to avoid direct sun, keep the area cool and clean, wear loose cotton clothing, and apply a mild moisturizer or calamine lotion. If itching is bothersome, an antihistamine may help. See a doctor if it worsens, spreads, or does not improve in a few days.